Great nonfiction picture books by Robert Wells and others!

I love Montessori Services as a source for picture books, particularly on science and math topics. I periodically go through their catalogue and check recommended books out from my library. One of my favorite writers featured is Robert Wells. Solana and I loved both the humor and the explanations of concepts in Can You Count to a Google? What's Smaller than a Pygmy Shrew? and others.