Trampus. "Propaganda photograph: Men treating a bush with an electrical reactions device". A French invention. / An electrical reactions (A / High Frequencies waves) destine to fight the MA- / Ladies of the plants (phylloxera) and to kill the / harmful insects (Doryphore) has just been / developed by Mr. Gassman. / Mr. Gassman treating a tree with his device. / V. Gelatino-silver-bromide draw. Dactylographed legend in black ink. in 1943-10-20-1943-10-20. Paris, Carnavalet museum. 144784-3

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Photo credit: © piemags/PMN / Alamy / Afripics
License: Licensed
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