Tobias married a fellow Sorbonne University student, Anja Ourisson, and the couple emigrated to the United States in 1910. He worked for a time as a lumberjack, road worker, and house painter in Oregon, until returning to academia at the encouragement of Reed College mathematician Frank Griffin.[1] Dantzig received his Ph.D. in mathematics from Indiana University in 1917, while working as a professor there.[3][4] He later taught at Johns Hopkins, Columbia University, and the University of Maryland.