This core collection provides access to original or facsimile documents maintained by the Chorus as of 2005, and provided at this time for the archives at the Grand Rapids Public Library.

There are few items which document the early years of the Club. The bulk of the documents in the collection date from the 1930s to the present. Some of these later items record the earlier history of the organization from 1883 to the present, but the original documents themselves are not included here, although some are found in other collections in the GRPL archives. Programs in the collection, for example, begin in the 1930s. Earlier programs exist in Coll. 235, which documents Paderewski's visits, and that collection also holds documents from the McGuire Sisters visit in 1955. Other Schubert Club related documents in GRPL archival collections may be listed under programs or ephemera, or hidden in scrapbooks.

No sheet music is currently found in the collection. Since most of the music performed is national or international in scope, the music which would be of most interest for addition to the collection are those by Michigan or Grand Rapids composers or performers, or those works commissioned by the Club itself.

A few sound recordings are included of the chorus in performance. These date from primarily from the 1980s to 2004, with one 1968 recording included.

Few of the operational papers of the Club, such as annual reports, minutes, or correspondence, are housed in this archives at this time, and are believed to still reside with the organization as part of their active files.