Other
African Americans
2
Anthracite coal industry
1
British
1
Businessmen
1
Cities and towns
1
City and town life
1
Civilisation
1
Civilization
2
Coal miners
1
Coal mines and mining
1
Conditions économiques
6
Conditions sociales
4
Conservation and restoration
1
Consumption (Economics)
1
Curricula
1
Depressions
2
Description and travel
4
Dwellings
1
Economic aspects
1
Economic conditions
Economic history
6
Economics
2
Education
1
Educational films
1
Emigration and immigration
1
Ethnic groups
1
Ethnic restaurants
1
Ethnicity
1
Families
1
Family
1
Filmed lectures
1
Foreign opinion, French
1
Frontier and pioneer life
1
Gentry
1
Germans
2
Glass manufacture
1
Greek Americans
1
Heating
1
Heating and ventilation
1
Historic sites
1
History
10
History, Local
1
Holidays
1
Immigrants
1
Industrialization
1
Industries
1
Intellectual life
4
Iron industry and trade
2
Korean Americans
1
Korean War, 1950-1953
1
more ...