The MEMEBERSHIP record group expansively documents membership procedures from 1883 through 1996, and include applications for membership, member acceptance and resignations; membership proposals; inventory cards with name, occupation, date of birth and death; and membership committee meeting records from the mid-1980s and mid-1990s. Files within each record group and series have been arranged alphabetically; with the exception of oversized materials and digitized materials.

The MEMEBERSHIP record group expansively documents membership procedures from 1883 through 1996, and include applications for membership, member acceptance and resignations; membership proposals; inventory cards with name, occupation, date of birth and death; and membership committee meeting records from the mid-1980s and mid-1990s. Files within each record group and series have been arranged alphabetically; with the exception of oversized materials and digitized materials.