Between 1945 and 1961, Harris was a regular contributor of stories, poems and essays to "Kyk-over-Al" literary magazine and was part of a group of Guyanese intellectuals that included Martin Carter, Sidney Singh, Milton Williams, Jan Carew, and Ivan Van Sertima. Harris later privately printed his poetic contributions to the magazine in the collection "Eternity to Season" (1954). Harris married his first wife Cecily Carew in 1945 (sister of famed Guyanese novelist Jan Carew). They had four children; the marriage dissolved around 1957.