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6 citrus workers standing with fumigation tent; on back of photograph: Raising a tent to cover a citrus tree in order to fumigate with cyanide gas. Sometimes men as well as bugs were killed.
1 black and white photograph 5 x 7 1/16 with border 4 1/2 x 6 9/16 without border
http://ark.cdlib.org/ark:/13030/kt2z09r6fv cupl_002 1 Ag Ci 3
Agricultural laborers (Photograph) Citrus fruit industry--California, Southern Citrus fruit industry--Groves Citrus fumigation tent Pest control Upland (Calif.)--History--Pictorial works