Annick Press is a Canadian Publisher with a wide variety of titles. Although most titles in this list have a lesson plan link below them, be sure to click on each title to access additional resources including teachers guides, printable activities, and related links. Made You Look How Advertising Works and Why You Should Know is one title that I would personally and highly recommend for anyone teaching media literacy (see my post on Dollars and Sense, which features picture books and ideas for teaching about financial literacy).
Big Guy Books is a small press specializing in titles for boys. Their time traveling Time Soldiers books are perfect for those reluctant readers in your class, and the professionally written teaching guides are a definite incentive for further exploring these titles. You can even preview the first title of that series (Rex) via a free ebook.
Crabtree Publishing has a series of high quality, curriculum aligned teaching guides that provide lesson plan ideas as well as blackline masters. While there, also check out the printable graphic organizers. If you like what you see, you can create an online wish list for parents and friends.
Dawn Publications specializes in science and nature picture books for the younger crowd, although I would still highly recommend their titles for classroom use through the upper elementary grades. Several of their titles would be a great way to prepare students for field trips, and I've also see their applications in summer camp settings. As Nature Director at a summer camp, I put Joseph Cornell's books to use on an almost daily basis. Sharing Nature with Children and Sharing Nature with Children II are classics which belong on every nature lover's bookshelf.