"Question Mark" plane refueling over Imperial Valley [graphic].
still image
Photographic prints 1920-1930. gmgpc
c1929.
eng
Photograph shows a fuel line stretched between two airplanes in mid flight; one plane has a question mark painted on its side and the other has the number one.
Similar to photo with copy negative LC-USZ62-36411.
Title from item.
Air refueling--Imperial Valley (Calif. and Mexico)--1920-1930.
Airplanes--Imperial Valley (Calif. and Mexico)--1920-1930.
http://hdl.loc.gov/loc.pnp/cph.3a17334
No known restrictions on publication. No renewal found in U.S. Copyright Office, 1960.