["History - Modern","History - United States\/20th Century","Juvenile Nonfiction \/ History \/ Modern","Juvenile Nonfiction \/ History \/ United States \/ 20th Century","History - Other","History, Modern - 20th century","Twentieth century","Children's Books\/Ages 9-12 Nonfiction","Juvenile Non-Fiction","CHILDREN'S HISTORY \/ U. S. \/ 20TH CENTURY","History, Modern;20th century.","History, Modern;20th century;Juvenile literature.","History, Modern;20th century;Pictorial works.","JUVENILE","JUVENILE NONFICTION \/ History \/ General","Juvenile Grades 4-6 Ages 9-11","Juvenile Non-Fiction","Juvenile Nonfiction \/ History \/ United States \/ 20th Century","20th century","History, Modern","Juvenile literature","Pictorial works","Reference & Home Learning","Children: Grades 4-6","Juvenile Nonfiction","History & the past: general interest (Children's\/YA)"]