found: His La lettre et l'image, 1970.
found: His Les compagnons de la marjolaine, c1985:t.p. (Massin)
found: LC data base, 12/21/85(hdg.: Massin, Robert; usage: Massin)
found: His Le branle des voleurs, c1983:t.p. (Massin) p. 331 (lists works published, including those under pseud. Claude Menuet)
found: Bibl. Fr. 85-26226(hdg.: Massin (Robert); usage: Massin)
found: His Catalogue raisonné de l'oeuvre typographique de Massin, c1998:t.p. (Massin)
found: Journal en désordre, c1996:t.p. (Massin) back cover ("cet homme sans prénom")
found: Bibliothèque nationale cat., 27 July 1999(hdg.: Massin, 1925-)