"Friedenstag" von Stefan Zweig, Richard Strauss und Joseph GregorPeter Petersen · First published 2017Open the Tome
A study of selected works of Gregor Joseph Werner (1695?-1766)Charles J. Warner · First published 1965Open the Tome
Richard Strauss und Joseph Gregor Briefwechsel, 1934-1949Richard Strauss · First published 1955Open the Tome
Richard Strauss/ Joseph Gregor: Die Liebe der DanaeLindner, Dolf. · First published 1952Open the Tome
