Old catalog hdg.: DC Comics, inc.

DC super ... c1978 (subj.) c. statement (DC Comics, inc.)

The Greatest Joker stories ever told, c1988: t.p. verso (DC Comics, Inc.)

The Golden age of Spectre archives, Vol. 1, c2003: t.p. verso (DC Comics, 1700 Broadway, New York, NY 10019) p. [5] (DC Comics (a.k.a. National); Detective Comics)

Wikipedia, viewed 02/18/2014 (Began as National Allied Publications in 1934; changed name to DC Comics, Inc. in 1977)

Biblioteca del Congreso (Estados Unidos), 20 noviembre 2018) : catálogo electrónico : https://goo.gl/3BsGXx