I wonder if these links are useful to people or if I'm just pointing to things that everyone has already seen. In any case, here are a few interesting things that have caught my attention.
Via The Comics Reporter, here's a link to a review of Alex Toth's Zorro collection by Derik A Badman. What makes the review so good is that there's a fairly detailed analysis of Toth's compositions. If you're interested in layout, you can learn a lot from Toth. Continuing with Toth, here's a piece by Jesse Hamm which lists 7 reasons why Toth's art is great. Both articles are very informative.
I've been remiss in not mentioning the ASIFA-Hollywood archive. So far, two parts of an interview John K. did with Friz Freleng, Bill Hanna and Joe Barbera have been posted. Here's part 1 and here's part 2. Today, they posted some comic book work by animator Jim Tyer. You can easily recognize Tyer's style in the Heckle and Jeckle comics printed there, but you can also see how normal his drawing is, reminding us how deliberately he stylized his animation. There's lots of great art to discover at the archive, so any time spent digging through it will be time well spent.