1924 - McCormic, early in her career, gained the artist management services of Charles L. Wagner (1869-1956), who also managed world figures that included Mary Garden, Amelita Galli-Curci, Walter Gieseking, Jussi Björling, Alexander Kipnis, and Jeanette MacDonald.
1938 - McCormic, later in her career, was managed by Mme.