Materials from the various units of the Chicago Children’s Choir including communications to singers and parents, choir bulletins and notices, rosters, application and registration forms, letters to school principals and teachers, attendance sheets, and schedules. There is overlap in materials between this subseries and the following subseries covering school choirs and parent materials. Some of the Chicago Children’s Choir unit names are Crickets, Warblers, Regular Junior Tour, Intensive Junior Tour, Concert Unit in Training, Senior Tour and Senior Tour Unit, Madrigal Singers, Men’s Chorus, Folk Ensemble, Concert Choir in Training, and Concert Choir. See also clippings scrapbook for additional notices and singer information.