Ma'lum: Camera
Tug'ilgan yili: 1901-01-13
Tug'ilgan joyi: Verkhniy Lomov, Nizhniy Lomov uyezd, Penza Governorate, Russian Empire [now Nizhnelomovsky District, Penza Oblast, Russia]
Shuningdek, taniqli: L. Kosmatov, Л. Косматов, Леонид Васильевич Косматов