Someone named Derek Langille has compiled an interesting Flickr page (actually, at the moment, two pages with more probably on the way) showing double-page spreads that Jack Kirby did for comics over the years. They all seem to date from 1970 and it's worth noting that a large percentage of these were done during a period when some in the industry were saying that Jack was washed up and didn't care; that he was just hacking the work out for a paycheck.
That was never true of Kirby. He was capable of doing work that wasn't up to his standard but he wasn't capable of not trying. That was one of the things I learned from the man and have tried to apply to what I do. I realized early-on that it wasn't possible to equal Jack's brilliant imagination and skill but it was humanly possible to work just as hard as he did.
Anyway, there they are…featuring the inking of Mike Royer, D. Bruce Berry, Vince Colletta, Frank Giacoia and one or two others…but mostly Royer. I'd say more about them but they really speak for themselves. What amazing artwork.