After his service he became editor of a group of trade papers in New York, where he taught medical jurisprudence and wrote technical articles and pulp magazine fiction.

[1] In 1937 he returned to Washington to represent a chain of trade journals, and there subsequently became a government lawyer for the duration of World War II.

Ten of the Jules de Grandin stories were collected in The Phantom Fighter (Mycroft & Moran, an imprint of Arkham House), 1966.

[3] Although the De Grandin stories were enormously popular on their initial publication, modern critics tend to regard them as the weakest part of Quinn's work, with Brian Stableford describing the De Grandin stories "as indeed rather undistinguished", claiming they are full of stereotyped characters and poorly resolved plots.

The second was An Encyclopedic Law Glossary For Funeral Directors and Embalmers, published by the Williams Institute of Mortuary Science, Kansas City 1940, with an introduction by Quinn, dated January 1940.

His Jerome Burke material, not necessarily in sequence, is available in This I Remember: Memoirs of a Funeral Director, published by the Battered Silicon Dispatch Box, with a foreword by Arnold Dodge.

[4] Quinn's posthumously published novel Alien Flesh (1977) is a sexually explicit erotic fantasy about a male Egyptologist who has a magical sex change into a beautiful young woman.

[5] Night Creatures, a collection of stories by Quinn, edited by Peter Ruber and Joseph Wrzos for Ash-Tree Press appeared in (2003).

It has two of the "Major Sturdevant and his Washington Nights' Entertainment series", subtitled "Stories of the Secret Service", and two more featuring Professor Forrester, another amateur detector of crimes.