Mannes, David. 90th Birthday concert recording (1956 February 16)., 2014 (recording restoration), Box: Mixed dmx_6 (R), dvd-case: MA010401_D004. Harry Scherman Library Grille collection, MA-01-04-01. The New School Archives. https://findingaids.archives.newschool.edu/repositories/3/archival_objects/58351 Accessed September 10, 2025.