found:Sex and soul, p1973:label (Roy C., vocals)
found:All music guide WWW site, Apr. 6, 2006(Roy-C; Roy Hammond; from Long Beach, L.I.; soul singer, songwriter)
found:U.S. copyright file, Apr. 6, 2006(Hammond, Roy C., 1934- ; Hammond, Roy C., 1939- ; Hammond, Roy Charles, 1939- ; Hammond, R.)
found:Enc. of pop. mus., 3rd ed.(C., Roy; b. Roy Charles Hammond, 1943, New York City)
found:New York times online, September 22, 2020(obituary dated September 21, 2020: Roy Hammond; Roy C. Hammond; Roy Charles Hammond; born August 3, 1939, Newington, Georgia; died Wednesday [September 16, 2020] at his home in Allendale, South Carolina, at age 81; soul singer, songwriter, and producer; wrote and produced the Honey Drippers' “Impeach the President,” a political funk barnstormer released in 1973 as the Watergate scandal unfolded around President Richard M. Nixon; moved to New York as a teenager; known as Roy C (or Roy "C"))
notfound:Int. ww in pop. mus., 7th ed.
found:Wikipedia, September 22, 2020(Roy C; Roy Charles Hammond; born August 3, 1939, Newington, Georgia; died September 16, 2020, Allendale County, South Carolina; better known as Roy C or Roy "C"; American southern soul singer, songwriter, and record executive, best known for his 1965 hit, "Shotgun wedding")