- Alien labor--Quotations, maxims, etc (1)
- Communism (1)
- Engels, Friedrich, 1820-1895 (1)
- Engels, Friedrich, 1820-1895--Quotations (1)
- Lenin, Vladimir Ilʹich, 1870-1924 (1)
- Lenin, Vladimir Ilʹich, 1870-1924--Quotations (1)
- Marx, Karl, 1818-1883 (1)
- Marx, Karl, 1818-1883--Quotations (1)
- Migrant labor--Quotations, maxims, etc (1)
- Socialism (1)