 In 1943, while still in the air force, Souster and two friends launched their own little poetry magazine, "Direction".In 1944 he placed 21 poems in the anthology "Unit of Five," alongside poetry by Louis Dudek, Ronald Hambleton, P. K. Page, and James Wreford.With Dudek and Irving Layton, Souster founded "Contact" magazine and Contact Press in 1952.