Each entry in this section contains basic information about the membership and purpose of the organization. Most entries also contain historical information. The majority of organizations have collections of their papers housed in the University Archives. Collection information for these was obtained from either unpublished finding aids available from the University Archives or a cursory examination of the materials themselves. Several organizations do not possess collections specific unto themselves, but may have information contained within other prominent collections housed in the University Archives, which are listed following the organization description.