American writer (1878–1968)
Sinclair
Swedish National Museum of Science and Technology
Rhône-Alpes Laboratory for Historical Research
National Library of France
Museum of Costume. Ethnological Heritage Research Centre
Upton Sinclair; Upton Sinclair, (1878-1968)
National Library of Romania
Upton Sinclair
Vincas Mykolaitis-Putinas Memorial Apartment-Museum
Upton Sinclair 
