David Sarnoff (1891 1971) American businessman, President of Rca proposed first commercial radio receiver and founder of NBC. Good content Tls lp 4to on Rca letterhead, New York 1937 to an artist Sarnoff thanks the man for his tribute to Marconi adding It was my privilege to have had Marconis friendship for many years your pictures symbolize the great gift that Marconi gave the world Two small spots in lower left blank margin light soiling 5