The Musical Composers of Lancaster County Collection contains sheet music written by local composers. Some local titles are "Lancaster German Waltz" and "Lancaster Theme & Gratitude Theme." Included in the collection is information about S. Becker von Grabill, composer and pianoforte teacher, and James L. Knipe of Aston, Knipe & McCarthy.
Collection contains material pertaining to pageants, festivals, and celebrations in Lancaster County. The majority of the collection pertains to the "Pageant of Liberty," celebrating the 150th anniversary of the Declaration of Independence (1776-1926), and the "Pageant of Gratitude," commemorating the 200th anniversary of the formation of Lancaster County (1729-1929). Included are scripts, minutes, programs, invitations, correspondence, financial records, tickets, photographs, blueprints, and sheet music.