The Bobroff Papers, 1904-1946, mainly concern his inventions. They include patents from several countries, articles and advertising matter concerning his inventions, and arguments before the Patent Office in a dispute over origination of the voting machine. The correspondence consists of letters of recommendation, letters concerning inventions, and personal letters. Included are letters of introduction signed by Charles E. Hughes and Robert Lansing. One folder of miscellaneous materials contains resolutions of endorsement of the voting machine signed by members of the Wisconsin Assembly, 1917; documents concerning the Teleoptic Company; and ship passenger lists from Bobroff's trips to Europe.
