This series documents each of the annual Christmas concerts, including: conductor’s marked score, set of marked and bowed instrumental parts, piano rehearsal scores, chorus scores, printed program, performance CD, performance video cassettes and DVDs for some concerts, and miscellaneous items such as promotional brochures, instructions to singers., etc. In addition to the annual seasonal concerts, this series includes similar material relating to occasional concerts of vocal music mostly from the American Songbook. The concert material is filed chronologically by date of performance.