Prokudin-Gorsky (also: Pokudin-Groskii); Sergey Mikhaylovich; Russian photographer (known for his pioneering work in colour photography of early 20th-century Russia); 1863 - 1944. Prokudin-Gorskii (right); an official and four railway workers riding on a rail trolley (draisine) outside Petrozavodsk; Russia (Murmansk railway).Photo; 1915 (Sergei M.Prokudin-Gorskii);original monochrome plates digitally combined.