Gorham (vicinity), New Hampshire. Barbara Mortensen, a fire and airpla...
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
Monitor in Trent's Reach, James River, Virginia showing torpedo finder...
The albumen silver print is a photographic printing process that was widely used in the 19th century. It involves coating paper support with a mixture of egg whites and salt, which creates a glossy surface to h... More
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
![Gathering meteorological data from stratosphere. Dr. L.F. Curtiss, of the U.S. Bureau of Standards, is shown here with part of the equipment he uses in experiments using radio to gather meteorological data at great altitudes. The complete radio apparatus for attachment to a balloon weighs less than two pounds, and preliminary trials show that the signals can be heard clearly at altitudes of 14 miles and at distances of 80 miles. A direction finder [...]bles experimenters to determine the location [...] he balloon the instant the radio wave is [...] out. 10/17/35](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MzUvMDEvMDEvZ2F0aGVyaW5nLW1ldGVvcm9sb2dpY2FsLWRhdGEtZnJvbS1zdHJhdG9zcGhlcmUtZHItbGYtY3VydGlzcy1vZi10aGUtdXMtYnVyZWF1LTEwMjQuanBn/40/30/webp "Gathering meteorological data from stratosphere. Dr. L.F. Curtiss, of the U.S. Bureau of Standards, is shown here with part of the equipment he uses in experiments using radio to gather meteorological data at great altitudes. The complete radio apparatus for attachment to a balloon weighs less than two pounds, and preliminary trials show that the signals can be heard clearly at altitudes of 14 miles and at distances of 80 miles. A direction finder [...]bles experimenters to determine the location [...] he balloon the instant the radio wave is [...] out. 10/17/35")
Gathering meteorological data from stratosphere. Dr. L.F. Curtiss, of ...
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Gorham (vicinity), New Hampshire. Barbara Mortensen, a fire and airpla...
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
African natives prepare for air attack. Guarding against possible enem...
Picryl description: Public domain image of the British Empire armed forces, 19th-20th century war and military conflict, free to use, no copyright restrictions.
Gorham (vicinity), New Hampshire. Barbara Mortensen, a fire and airpla...
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
Fort Cronkhite, Anti-Aircraft Battery No. 1, Height Finder, Wolf Ridge...
Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
Gorham (vicinity), New Hampshire. Barbara Mortensen, a fire and airpla...
Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
TARGET PRACTICE. RANGE FINDER AT WORK
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Fort Cronkhite, Anti-Aircraft Battery No. 1, Height Finder, Wolf Ridge...
Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
P.T. Russell of Navy Yard with ocean depth finder, 4/27/26
Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860
The opossum finder - Public domain American sheet music
From: Music Copyright Deposits, 1820-1860 (Microfilm M 3106) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form) In bound volumes: Copyright Deposits 1820-1860