Born October 9, 1874 Saint Petersburg, Russian Empire. Painter, archaeologist, costume and set designer for ballets, operas and dramas. Was married to Helena Roerich with two kids. George de Roerich and Svetoslav Roerich. Died December 13, 1947 (age 73)

Born February 20, 1902 San Francisco CA. Photographer and conservationist. Married Virginia Rose Best. Was awarded the Presidential Medal of Freedom in 1980. Was elected to the board of directors at the Sierra Club. Died April 22, 1984.