From 1961: A brief clip from a Canadian TV show in which Joe Barbera and Bill Hanna explain how animation is done in their Hollywood studio. Barbera's the one explaining the first part; Hanna takes over when they get down to the editing process. The man you see doing storyboard work near the top (not layout as Barbera's v.o. suggests) is Alex Lovy, who directed for Walter Lantz and was a key player on the H-B team.
A couple of folks viewing this have complained about the "sexism" when Mr. B. refers to "girls" doing the inking. All I can say to that is that that's the way everyone in the industry talked back then, and I doubt any females took umbrage. Truth to tell, in all my years around H-B, I never saw a woman who met Joe Barbera and didn't think he was an utterly charming gentleman. This included the week he and I (and a few other folks, all male) spent auditioning actresses in string bikinis for a sitcom pilot I wrote for the studio. If you have a dram of sexism in you, that's the situation where it's going to come out…and Mr. Barbera did our gender proud.