Trotsky Family Photo

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Motvey and Nadejda Trotsky pose for a studio portrait with their son Mark in Harbin circa 1930.  Motvey was sent to Harbin from Samara, Russia, in 1910 as the Far East representative of a Russian sugar company. He was accompanied by his wife Nadejda, who was a dentist before marrying, and their 4-year-old daughter Emma. Their son Mark was born in Harbin in 1915.

Emma emigrated to the United States in 1924 to study at the University of California in Berkeley, where she met and married Derrick (Dick) Lehmer. Both were noted mathematicians. Mark changed his surname to Ross in the 1930s after he and his parents moved to San Francisco. He founded Mark Ross & Co, an import-export firm based in that city.

Photo is courtesy of the Lehmer family. Permission to print here was provided in January 2016.