It's clear that Al Williamson and Carlos Garzon had the script and decent photo reference of the actors and characters when they drew the comic book adaptation of
The Empire Strikes Back:
Panels from Star Wars #42 (1977 Marvel series) (December 1980), script by Archie Goodwin, pencils and inks by Al Williamson and Carlos Garzon, colors by Glynis Wein, letters by Rick Veitch
But they
might not have had any notes on character height or any photos of Yoda and Luke
together:






