Pierre-Quint, Léon. Marcel Proust: sa vie, son oeuvre and Le Comique et le Mystere chez Proust, 1921, 1927 | Rare Book & Manuscript Library, University of Illinois at Urbana-Champaign

Léon Pierre-Quint (born Léopold Léon Steindecker) was a French author and publisher. Formerly a novelist, Pierre-Quint began his publishing career in 1923 when he was appointed co-director of Éditions du Sagittaire, a publishing house that became popular among Parisan Surrealists with the publication of André Breton's Manifeste du surréalisme in 1924. Pierre-Quint published Marcel Proust: se vie, son oeuvre (1925), making him an early authority on the literary figure. Pierre-Quint became the sole director of Éditions du Sagittaire in the early 1930s and maintained this title until 1954, when he departed due to the house's financial difficulties.

Source

Alden, Douglas W. "Marcel Proust (10 July 1871-18 November 1922)." In Dictionary of Literary Biography: French Novelists, 1900-1930, edited by Catharine Savage Brosman, 218-254. Detroit: Gale, 1988. https://link.gale.com/apps/doc/OLZWZN079199280/DLBC?u=uiuc_uc&sid=bookmark-DLBC&xid=d8494ca9.