Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Geer-Tiona Lot 202 Lease, Tiona Field, Tiona, Warren County, PA
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Geer-Tiona Lot 202 Lease, Tiona Field, Tiona, Warren County, PA
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
South Penn Oil Company, G. M. Mead Lot 492 Lease, Morrison Run Field, ...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Golden Oil Company, Lot 410 Lease, Sheffield Field, Donaldson, Warren ...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
South Penn Oil Company, Lockwood Warrant 2921 Lease, Wardwell Field, W...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
South Penn Oil Company, Lockwood Warrant 2921 Lease, Wardwell Field, W...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Geer-Tiona Lot 202 Lease, Tiona Field, Tiona, Warren County, PA
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Geer-Tiona Lot 202 Lease, Tiona Field, Tiona, Warren County, PA
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Golden Oil Company, Lot 410 Lease, Sheffield Field, Donaldson, Warren ...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Geer-Tiona Lot 202 Lease, Tiona Field, Tiona, Warren County, PA
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
Geer-Tiona Lot 202 Lease, Tiona Field, Tiona, Warren County, PA
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Rocky Mountain Laboratories, Building No. 7, 903 South Fourth Street, ...
Significance: The Rocky Mountain Laboratories possess national significance due to the pioneering research conducted at these laboratories from 1921-1945 toward the development of vaccines for insect-borne dise... More
South Penn Oil Company, G. M. Mead Lot 492 Lease, Morrison Run Field, ...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
South Penn Oil Company, Lockwood Warrant 2921 Lease, Wardwell Field, W...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Allegheny National Forest Oil Heritage, Warren, Warren County, PA
Significance: Western Pennsylvania is the birthplace of the modern petroleum industry, signified by the drilling of Edwin Drake's oil well near Titusville in 1859. Subsequent development of the Appalachian oil... More
South Penn Oil Company, Mallory Lot 6 Lease, Watsonville Field, Klondi...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
South Penn Oil Company, Mallory Lot 6 Lease, Watsonville Field, Klondi...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
South Penn Oil Company, Mallory Lot 6 Lease, Watsonville Field, Klondi...
Significance: Pennsylvania is the birthplace of the petroleum industry, signified by the drilling of Edwin Drake's well near Titusville in 1859. Many widely used techniques of drilling and pumping oil were fir... More
Scow Schooner ALMA, Hyde Street Pier, San Francisco, San Francisco Cou...
Public domain scan of print depicting a sailboat or small ship, seascape, free to use, no copyright restrictions image - Picryl description
Scow Schooner ALMA, Hyde Street Pier, San Francisco, San Francisco Cou...
Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description