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50.3 MB (4.3 MB compressed)
3865 x 4553 pixels
32.8 x 38.6 cm ⏐ 12.9 x 15.2 in (300dpi)
LIBRARY OF CONGRESS / SCIENCE PHOTO LIBRARY LIBRARY OF CONGRESS / SCIENCE PHOTO LIBRARY
Weedkilling gas treatment. Researchers wearing gas masks testing the use of tear gas as a weedkiller. The tests are being carried out by a grass specialist (left) of the United States Golf Association, with the rake being used by a researcher from the US Department of Agriculture. Photographed on 4 August 1938, in Washington DC, USA.
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