Disambiguation: from The Shadow
First published in: 1940
Margo Lane's first appearance was in 1937 in The Shadow radio drama. Margo (as Margot) first appeared in a comic book in Shadow Comics (Street and Smith, 1940 series) #1 ([March] 1940).
Link: https://en.wikipedia.org/wiki/Margo_Lane Link: https://en.wikipedia.org/wiki/The_Shadow