Green’s Dictionary of Slang

(US black) a derog. term for a white man, also attrib.

1963		W.G. Smith Stone Face 87: [of a Parisian policeman] ‘Jus’ playin it cool, jus’ playin it cool, man, man, tryin to keep ole Charlie off my back.’ Ole Charlie paced the street, waving his submachine gun.
1964		L. Hairston ‘The Winds of Change’ in Clarke Harlem, USA (1971) 323: They all was beaming like they had Charley’s number.
1965		C. Brown Manchild in the Promised Land (1969) 327: I never knew they had all those bad niggers in the South, I thought the baddest cat down there was Charlie.
1967		R. Conot Rivers of Blood 36: ‘Them Charley bastards won't even give you no water’.
1971		B. Malamud Tenants (1972) 95: He was a tall stringy Charlie with long legs and a big prick.
1980		J.L. Gwaltney Drylongso 21: Chahlie don’t know that.