First gas map in America, Washington, D.C. Sept. 24. Chairman LaFollette and Senator Elbert Thomas, Utah, of the Senate Committee investigating strike activity view what is believed to be the first gas map of America, a chart showing use and sales of tear and nauseating gas in industrial disputes. The map has been put up on the wall of the Senate's hearing room where the inquiry is to be conducted. Each pin on the map represents $500 worth of fumes or equipment sold