Melissa Sweet, Caldecott-winning illustrator, talks about her process in a Highlights interview.
Highlights Podcast: Illustration from an Art Director's Perspective
Highlights Podcast: Kelly Light and Steve Light (not related) talk about their work as author/illustrators.
Alvina Ling's Blog: Alvina is an editor at Little, Brown BFYR. Her blog isn't very active now, but scroll down in the right-hand column for "A SAMPLING OF MY CHILDREN'S BOOK-RELATED POSTS," which includes a number of accounts of how she acquired and edited particular books.
Jane Friedman on a book's "profit and loss" calculation, referred to in the Q and A.
Darcy Pattison, Highlights faculty, on The 50 Tasks of the Indie/Self Publisher
Self-Publish or Not?: Harold discusses some of the issues to consider when making this decision.