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Salinas, California. Intercontinental Rubber Producers. Gathering guayule seed with a vacuum machine

Salinas, California. Intercontinental Rubber Producers. Gathering guay...

Public domain photograph of rural California, dust bowl refugees, 1930s-1940s, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Demonstration of combined harvester and chopper of guayule. This machine was designed and built by the company

Salinas, California. Intercontinental Rubber Producers. Demonstration ...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. This factory can produce 10,000 pounds of rubber from guayule daily

Salinas, California. Intercontinental Rubber Producers. This factory c...

Picryl description: Public domain image of an industrial building, warehouse, depot, train station, 19th-20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Four-year-old guayule shrubs. To the layman, guayule looks a great deal like sage brush

Salinas, California. Intercontinental Rubber Producers. Four-year-old ...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Spreading guayule seed out for drying in the nursery of the Intercontinental Rubber Producers

Salinas, California. Spreading guayule seed out for drying in the nurs...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Cultivating two-year-old guayule shrubs

Salinas, California. Intercontinental Rubber Producers. Cultivating tw...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Demonstration of combined guayule harvester and chopper at the Intercontinental Rubber Producers

Salinas, California. Demonstration of combined guayule harvester and c...

Picryl description: Public domain photograph of a truck, car, tractor, 1930s, free to use, no copyright restrictions.

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Intercontinental Rubber Producers. The man on the machine is transplanting guayule seedlings into the field

Salinas, California. Intercontinental Rubber Producers. The man on the...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Mower which cuts off tops of guayule seedling in the nursery before transplanting into the field

Salinas, California. Intercontinental Rubber Producers. Mower which cu...

Picryl description: Public domain image of a farmer worker, 20th-century dust bowl, great depression era, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Gathering guayule seed by means of a vacuum

Salinas, California. Intercontinental Rubber Producers. Gathering guay...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Salinas, California. Guayule rubber "worms," the form that the rubber assumes as the bagasse sinks to the bottom of settling tanks at Intercontinental Rubber Producers

Salinas, California. Guayule rubber "worms," the form that the rubber ...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Cultivating guayule shrubs

Salinas, California. Intercontinental Rubber Producers. Cultivating gu...

Picryl description: Public domain image of a farm, farmer, agriculture, early 20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Demonstration of transplanting guayule seedlings into the field

Salinas, California. Intercontinental Rubber Producers. Demonstration ...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Intercontinental Rubber Producers. Spreading guayule seed in flats for drying

Salinas, California. Intercontinental Rubber Producers. Spreading guay...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Guayule "worms"

Salinas, California. Intercontinental Rubber Producers. Guayule "worms...

Picryl description: Public domain image of food, dinner, grocery store, eating, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Two-year-old guayule plants. At two years, the guayule contains about nine percent rubber of dry weight. To supply the emergency needs for rubber, these shrubs would have to be planted closer together if a two year harvest cycle were planned. Rubber yield per acre would then closely approximate the yield from mature shrubs

Salinas, California. Intercontinental Rubber Producers. Two-year-old g...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Guayule planter. Seeds mixed with sawdust are planted by this machine which also distributes a thin stream of sand over the seeds. This is a nursery operation. Seedlings sprout in a few days, grow in the nursery about eight months before being transplanted into the field

Salinas, California. Intercontinental Rubber Producers. Guayule plante...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Laboratory exhibit. This specimen shows the "worms" of rubber on top and the bagasse settled to the bottom, which is exactly what happens in regular factory operations of rubber extraction

Salinas, California. Intercontinental Rubber Producers. Laboratory exh...

Picryl description: Public domain image of food, dinner, grocery store, eating, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Laboratory exhibit. This specimen shows the "worms" of rubber on top and tha bagasse settled to the bottom, which is exactly what happens in regular factory operations of rubber extraction

Salinas, California. Intercontinental Rubber Producers. Laboratory exh...

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

Salinas, California. Combined guayule harvester and chopper designed and built by Intercontinental Rubber Producers

Salinas, California. Combined guayule harvester and chopper designed a...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Dr. William B. McCallum, manager who had been with the company since 1910 and is reputed to be the world's outstanding expert in guayule culture

Salinas, California. Intercontinental Rubber Producers. Dr. William B....

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Transplanting seedlings from the guayule nursery into the field in a demonstration. This machine as well as all others used in cultivation of guayule was designed and built mostly from standard parts at the Salinas farm

Salinas, California. Intercontinental Rubber Producers. Transplanting ...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Digger of seedlings in the guayule nursery

Salinas, California. Intercontinental Rubber Producers. Digger of seed...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Intercontinental Rubber Producers. "Worms," the form that guayule takes after being chopped and crushed and put in settling tanks

Salinas, California. Intercontinental Rubber Producers. "Worms," the f...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Guayule rubber "worms." In the factory the guayule shrub is put through various choppers and crushers while mixed with liquids. After being crushed and rolled, it goes to settling tanks where these "worms" form as the bagasse sinks to the bottom. Later the "worms" are dried and go through rollers to form a cake of rubber

Salinas, California. Intercontinental Rubber Producers. Guayule rubber...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Guayule seedlings in the nursery

Salinas, California. Intercontinental Rubber Producers. Guayule seedli...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Demonstration of digger used in guayule nursery. In actual operations, the tops of the plants are cut off by the mower before they are dug. When transplanted, the guayule seedlings weigh about two grams

Salinas, California. Intercontinental Rubber Producers. Demonstration ...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Salinas, California. Demonstration of combined guayule harvester and chopper at the Intercontinental Rubber Producers

Salinas, California. Demonstration of combined guayule harvester and c...

Picryl description: Public domain image of a quarry, mine, excavation, or mining site, free to use, no copyright restrictions.

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Public domain aerial photograph, no copyright restrictions image - Picryl description Public domain photograph of a hotel building, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. D.O. Mumford, superintendent, in the company shops. He designed all mechanical equipment necessary in guayule cultivation

Salinas, California. Intercontinental Rubber Producers. D.O. Mumford, ...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Cultivating two-year-old guayule plants. This is the only place in the world where guayule is now cultivated

Salinas, California. Intercontinental Rubber Producers. Cultivating tw...

Public domain photograph of rural California, dust bowl refugees, 1930s-1940s, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Guayule shrubs go through a chopper in the laboratory. In commercial operations the shrub is harvested and chopped by one machine before going to the factory for rubber extraction

Salinas, California. Intercontinental Rubber Producers. Guayule shrubs...

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Public domain photograph of San Francisco, California, no copyright restrictions image - Picryl description

Salinas, California. Guayule plants in demonstration go into the chopper on combined harvester and chopper at the Intercontinental Rubber Producers

Salinas, California. Guayule plants in demonstration go into the chopp...

Public domain photograph - California, United States, World War Two, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Chopped and crushed guayule. The shrub is treated like this before going through various rollers in the factory in the process of rubber extraction

Salinas, California. Intercontinental Rubber Producers. Chopped and cr...

Picryl description: Public domain image of food, dinner, grocery store, eating, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Digger of seedlings in the guayule nursery

Salinas, California. Intercontinental Rubber Producers. Digger of seed...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Approximately four-year-old guayule plant. The seedlings remain in the nursery for eight or nine months, the age of the shrub being determined by the length of time it is in the field. Guayule reaches maturity in from four to six years. At maturity the plant is about three feet in height. The rubber content is from eighteen to twenty percent of the dry weight

Salinas, California. Intercontinental Rubber Producers. Approximately ...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Putting seed into the planter used in guayule nursery of the Intercontinental Rubber Producers

Salinas, California. Putting seed into the planter used in guayule nur...

Picryl description: Public domain image of military vehicle, automobile, tractor truck, free to use, no copyright restrictions.

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Intercontinental Rubber Producers. Digger of guayule seedlings in the nursery

Salinas, California. Intercontinental Rubber Producers. Digger of guay...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Four-year-old guayule shrubs. Guayule requires from seven to fifteen inches of rainfall annually, ten inches being ideal for successful cultivation

Salinas, California. Intercontinental Rubber Producers. Four-year-old ...

Picryl description: Public domain image of a farmer worker, 20th-century dust bowl, great depression era, free to use, no copyright restrictions.

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Intercontinental Rubber Producers. Guayule seed mixed with sawdust in the planter used in the nursery

Salinas, California. Intercontinental Rubber Producers. Guayule seed m...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Two-year-old guayule shrubs

Salinas, California. Intercontinental Rubber Producers. Two-year-old g...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Guayule seedlings in the nursery. Elevated irrigation pipes are installed throughout. There are approximately 70,000 seedlings to the acre in the nursery

Salinas, California. Intercontinental Rubber Producers. Guayule seedli...

Picryl description: Public domain image of field, irrigation, agriculture, water, free to use, no copyright restrictions.

Salinas, California. Putting thermometer into drying guayule seed at the nursery of the Intercontinental Rubber Producers

Salinas, California. Putting thermometer into drying guayule seed at t...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. A sack of seed from selected guayule plants. This selected seed will be used for experimental work in seed propagation to raise shrubs for maximum production

Salinas, California. Intercontinental Rubber Producers. A sack of seed...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Harry Baucher, head chemist, runs rubber extraction tests on guayule

Salinas, California. Intercontinental Rubber Producers. Harry Baucher,...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Salinas, California. Guayule planter in the nursery of the Intercontinental Rubber Producers

Salinas, California. Guayule planter in the nursery of the Intercontin...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Four-year-old guayule plants. An acre of mature shrubs will yield from 1800 to 2500 pounds of rubber

Salinas, California. Intercontinental Rubber Producers. Four-year-old ...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Head chemist at the Intercontinental Rubber Producers experimenting on the deresination of guayule rubber

Salinas, California. Head chemist at the Intercontinental Rubber Produ...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Harry Baucher, head chemist, works on deresinating tests

Salinas, California. Intercontinental Rubber Producers. Harry Baucher,...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Salinas, California. Putting seed into the planter used in guayule nursery of the Intercontinental Rubber Producers

Salinas, California. Putting seed into the planter used in guayule nur...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Mower which cuts off tops of guayule seedlings in nursery before transplanting

Salinas, California. Intercontinental Rubber Producers. Mower which cu...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Guayule seed mixed with sawdust coming from planter in nursery of the Intercontinental Rubber Producers

Salinas, California. Guayule seed mixed with sawdust coming from plant...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Men on the machine are transplanting guayule seedlings into the field. All machines used in guayule culture were designed and built in the company shops, mostly from standard parts

Salinas, California. Intercontinental Rubber Producers. Men on the mac...

Public domain photograph of a shop, shopping, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. A machine which digs guayule seedlings in the nursery. After the seedlings are dug, they must be separated by hand before transplanting

Salinas, California. Intercontinental Rubber Producers. A machine whic...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Gathering guayule seed with a vacuum machine

Salinas, California. Intercontinental Rubber Producers. Gathering guay...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers cultivating two-year guayule plants. Guayule grows wild in parts of Texas, Arizona, and Mexico. The only cultivated fields of guayule are at Salinas

Salinas, California. Intercontinental Rubber Producers cultivating two...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Gathering guayule seed by means of a vacuum

Salinas, California. Intercontinental Rubber Producers. Gathering guay...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Pouring sand into the planter used in the guayule nursery

Salinas, California. Intercontinental Rubber Producers. Pouring sand i...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Demonstration of digger used in guayule nursery. In actual operations, the tops of the plants are cut off by the mower before they are dug. When transplanted, the guayule seedlings weigh about two grams

Salinas, California. Intercontinental Rubber Producers. Demonstration ...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Harry Baucher, head chemist, works in the company laboratory on deresinating tests. With deresinating equipment now under construction at the Salinas farm, rubber from guayule will be suitable for ninety percent of all uses of plantation or tree rubber

Salinas, California. Intercontinental Rubber Producers. Harry Baucher,...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Guayule seedlings in the nursery

Salinas, California. Intercontinental Rubber Producers. Guayule seedli...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Salinas, California. Intercontinental Rubber Producers. Cultivating two-year-old guayule shrubs. For the first two years in the fields the shrubs are cultivated frequently to keep down weeds and break up the soil which crusts easily

Salinas, California. Intercontinental Rubber Producers. Cultivating tw...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. C.A. Lee, cashier of the company. Contrary to news reports, this company insists that it is not an experimental farm but is a commercial concern

Salinas, California. Intercontinental Rubber Producers. C.A. Lee, cash...

Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Putting guayule seed into flats for drying at the Intercontinental Rubber Producers

Salinas, California. Putting guayule seed into flats for drying at the...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Title, date, and keywords provided by the photographer. Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs... More

Salinas, California. Intercontinental Rubber Producers. Guayule seedlings in nursery to be used in seed propagation tests

Salinas, California. Intercontinental Rubber Producers. Guayule seedli...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Salinas, California. Intercontinental Rubber Producers. Guayule nursery. Irrigation pipes are in elevated positions throughout the nursery. While irrigation is required in the nursery, none is needed in the fields

Salinas, California. Intercontinental Rubber Producers. Guayule nurser...

Picryl description: Public domain image of a rural countryside landscape, farmhouse, farm field, pasture free to use, no copyright restrictions.

View from the Top of the Mark Restaurant at the Mark Hopkins Intercontinental Hotel located on Nob Hill, San Francisco, California

View from the Top of the Mark Restaurant at the Mark Hopkins Intercont...

Public domain photograph of San Francisco, California, no copyright restrictions image - Picryl description