Subject
History
18
History and criticism
7
American literature
6
Economic conditions
5
In literature
5
Politics and government
5
Social conditions
5
New Deal, 1933-1939
4
Industrial promotion
3
Intellectual life
3
African Americans
2
Agriculture
2
Cities and towns
2
Description and travel
2
Economic aspects
2
Human ecology
2
Industrialization
2
Plantation life
2
Race relations
2
Sex role
2
Slavery
2
Urbanization
2
Women
2
Deforestation
1
Folk music
1
Forest conservation
1
Forest management
1
Forests and forestry
1
Industries
1
Lumbering
1
Popular music
1
Reforestation
1
Social aspects
1