Part of the Frick Collection Archives Repository
Mack Harrell and Sergius Kagen, February 12, 1956, 1955-1956, Box: 9, Folder: 15. The Frick Collection Concert Records, TFC.0600.010. Frick Collection Archives.
Mack Harrell and Sergius Kagen, February 12, 1956, 1955-1956, Box: 9, Folder: 15. The Frick Collection Concert Records, TFC.0600.010. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/21995 Accessed June 06, 2025.
