- Author: Hubbard Barbara Marx
- Language: English
- Author: Karl Marx Friedrich Engels
- Language: Spanish
- Year: 2019
Harpo Speaks!
epub
- Author: Harpo Marx, Rowland Barber
- Language: English
- Author: Kristi Upson-Saia Heidi Marx Jared Secord
- Language: English
- Year: 2023
Lenin Biography
pdf
- Author: Marx-Engels-Lenin Institute Moscow
- Language: English
- Author: Gary T. Marx
- Language: English
- Year: 1988
- Author: Heidi Marx-Wolf
- Language: English
- Year: 2015
