[2] Olsen was the son of Norwegian immigrants and grew up in Providence, Rhode Island.
He attended Brown University, and achieved a Phi Beta Kappa and a masters in science in 1908.
[3] He later met his wife, Thula Crismon (1896–1957) in Salt Lake City, Utah while teaching science.
[5] His large hobby granted him fame through the world of science fiction in his day, but that was not enough to support a family.
Ray Bradbury, just a teenager at the time, visited Bob Olsen often for mentorship, friendship, as well as simply a sharing of ideas.