Biography
Nathan Kay was individually named with Fred Biedenkapp and Israel Prager among speakers arrested at the Boston Common Sacco–Vanzetti memorial in August 1930, after authorities refused a permit. Charge, sentence, release and exact total custody are unreported. Source: https://www.marxists.org/history/usa/pubs/dailyworker/1930/v07-n203-NY-aug-23-1930-DW-LOC.pdf#page=1