Randolph Guggenheimer listed in Notable New Yorkers of 1896-1899
Randolph Guggenheimer, Notable New Yorkers of 1896-1899 : a companion volume to King's handbook of New York City (New York: M.King, 1899), 91.
Randolph Guggenheimer, Notable New Yorkers of 1896-1899 : a companion volume to King's handbook of New York City (New York: M.King, 1899), 91.