Joseph Harold (Harry) Dockweiler was a member of the New York Futurians, and married Rosalind Cohen, another Futurian. He shortened his name to Dirk Wylie, at the suggestion of Doris Baumgardt (Leslie Perri), another Futurian. He was a charter member of the CPASF. He published early fanzines including Fantasy Mirror (some under the Ego-Coop publishing house), and was the Ghuist saint. He and Frederik Pohl operated Shaggoth 6 and he had a car named Baby. He attended the Second Eastern. He was one of the earlier casualties of the wars (see X Document) which effectively ended the Futurians.
Later he published SF in pulp magazines such as Super Science Stories, Planet Stories, Thrilling Wonder Stories, and Astonishing Stories. Most of his published fiction was with Frederik Pohl and Cyril Kornbluth as co-authors. He wrote at least one SF story with Frederic Arnold Kummer, Jr., "When Time Went Mad." Dockweiler also used the pseudonyms of Paul Dennis Lavond and Elliott Whitney.
He served in WWII, and set up a literary agency (Dirk Wylie Literary Agents) after the War, with the help of Frederik Pohl. He and Pohl had gone to school together before joining the Futurians. Dockweiler died in 1948 of tuberculosis of the spine. His widow wanted to continue the agency, and did so with Pohl as her partner.