Green’s Dictionary of Slang

a derog. term describing a white person.

1902		Atlantic Monthly Dec. 803/2: The pale-faced missionary and the hoodooed aborigine are both God’s creatures [DA].
1938		X. Herbert Capricornia (1939) 487: I’ll tell you — all of you, you pale-faced cows.
1983		C. Knight We Shall Not Die 10: Our politicians have joined wid di paleface pigs an’ is giving wi hell, man.