Leonard, Irving A. (Irving Albert), 1896-1996 (Nombre personal)

His Ensayo bibliografico de Don Carlos de Sigüenza y ... 1929.

Sigüenza y Góngora, C. Documentos inéditos de don Carlos Sigüenza y Góngora, 1963: t.p. (Irving A. Leonard)

Marquis Who's Who online, Sept. 28, 2007: (b. Dec. 1, 1896)

Social Security online death index, Sept. 28, 2007: (d. Aug. 30, 1996)