I have a set of 22 hardback Weekly Reader dinosaur books for the grades 4-8 set, divided by periods.  I'll do 2 books for one credit for anyone who takes them all. PLUS I have 3 more to the series that were not in postable quality but still have all the info and look pretty good.. one has one ripped page on the index, and he chewed on the corner of the other two.  What is it that makes HB books soooo tasty???  Anyway, thats 25 books for 11 credits, all of one set, and a dream for any child thats into dinosaurs.