Sergey Prokudin-Gorsky
Sergey Mikhaylovich Prokudin-Gorsky (, ;  – September 27, 1944) was a Russian chemist and photographer. He is best known for his pioneering work in colour photography and his effort to document early 20th-century Russia.
Mikhail Vladimirsky
Mikhail Fyodorovich Vladimirsky (; – 2 April 1951) was a Soviet politician and revolutionary who was for a short period of time, the Chairman of the All-Russian Central Executive Committee.