[3] Through the following decades, Trapani racked up credits on hundreds of comic book stories for Gillmor, Charlton, Dell, Gold Key, ACG and others.

[4] Trapani replaced character co-creator Ramona Fradon for an extended run on the superhero title Metamorpho at DC Comics, beginning in 1966.

[5] Trapani also provided inks for many Steve Ditko-illustrated stories published by Charlton, ACG, and Dell, and regularly used Ditko as one of his many ghost artists.

[6] Trapani was also a prolific inker for Marvel Comics in the 1970s, providing embellishments for The Incredible Hulk, The Defenders, Ghost Rider, Man-Thing, and many others.

Trapani provided the inks on the Man-Thing story that first introduced Howard the Duck, in Adventure into Fear #19, written by Steve Gerber and pencilled by Val Mayerik.