"I didn't have a lot of objections to putting a crew on the first issue ... There were two young artists from Connecticut that had made a strong impression on me. Al Avison and Al Gabriele often worked together and were quite successful in adapting their individual styles to each other. Actually, their work was not too far from [that of] Kirby's. If they worked on it, and if one inker tied the three styles together, I believed the final product would emerge as quite uniform. The two Als were eager to join in on the new Captain America book, but Jack Kirby was visibly upset. "You're still number one, Jack," I assured him. "It's just a matter of a quick deadline for the first issue." "I'll make the deadline," Jack promised. "I'll pencil it [all] myself and make the deadline." I hadn't expected this kind of reaction ... but I acceded to Kirby's wishes and, it turned out, was lucky that I did. There might have been two Als, but there was only one Jack Kirby ... I wrote the first Captain America book with penciled lettering right on the drawing boards, with very rough sketches for figures and backgrounds. Kirby did his thing, building the muscular anatomy, adding ideas and pepping up the action as only he could. Then he tightened up the penciled drawings, adding detailed backgrounds, faces and figures.""
January 1, 1970
https://en.wikiquote.org/wiki/Captain_America