The “Native Americans, Creepy Crawlers, Penguins, My Country, Food, Our Environment, and Weather ” Thematic Unit Teacher Resource Books by Leigh Severson is a vintage paperback book published by Teacher Created Materials in 1991. These nonfiction activity books, intended for ages 4-8, offers 80 pages of history and historical information about various topics. It is part of a series of thematic units and features a stapled binding. These books provide a comprehensive and educational resource for teaching about many interesting subjects.