"Magpie" madrigal for soprano, mezzo-soprano, and contralto, words by John Galsworthy, 1922 October 30, Box: 3, Folder: 16. Leopold Mannes music manuscripts, MP-0012-01. The New School Archives. https://findingaids.archives.newschool.edu/repositories/3/archival_objects/51402 Accessed May 03, 2025.