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 Gorsheniov
Gorsheniov had admitted to being a longtime drug addict and heroin user. His unsuccessful struggle with his addiction caused his death on 19 July 2013 of heart failure due to alcoholic cardiomyopathy, as one source attributed it to a drug relapse. According to his wishes, he was cremated in Saint Petersburg and his ashes buried in Bogoslovskoe Cemetery of the city.