Juvenile literature 50 History 19 Biography 5 Commando troops 5 Politics and government 5 Social life and customs 5 Recipes 4 United States 3 African Americans 2 Aircraft carriers 2 Baseball 2 Case studies 2 Causes 2 Concord, Battle of, Concord, Mass., 1775 2 Diet therapy 2 Economic conditions 2 Lexington, Battle of, Lexington, Mass., 1775 2 Low-fat diet 2 Menus 2 Psychology 2 Softball 2 Women 2 World War, 1939-1945 2 Activity programs 1 Aerial operations, American 1 African American soldiers 1 African American troops 1 Amphibious assault ships 1 Amphibious warfare 1 Arab countries 1