Copyright 1999. Esther Katz. All rights reserved.
Political activist. Radical socialist who met Sanger through health writer and birth control advocate, Dr. William Robinson
. Bobsien attended meetings at Sanger's house to plan issues of The Woman Rebel
including the one at which the term "birth control" was first coined. He became was secretary of the short-lived first National Birth Control League
which was also organized at Sanger's house in 1914, and announced in The Woman Rebel
. When this League failed to take off, Bobsien gave the membership list to Mary Ware Dennett
, who formed the other, more successful National Birth Control League during Sanger's absence in 1915. Bobsien eventually left the movement and ended up residing in California.