868411 Lev Vygotsky (b/w photo) by Russian Photographer, (20th century); Private Collection; (add.info.: Lev Semyonovich Vygotsky (November 17 [O.S. November 5] 1896 ??June 11, 1934) was a Soviet Belarusian psychologist, the founder of a theory of human cultural and biosocial development commonly referred to as cultural-historical psychology, and leader of the Vygotsky Circle.); Sputnik; Russian, out of copyright.