Delaware Valley Archivists Group
https://delawarevalleyarchivists.org/

Philadelphia Area Consortium of Special Collections Libraries (PACSCL)
https://pacscl.org/

Association for Preservation Technology Delaware Valley Chapter
https://www.apt-dvc.org/

Preservation Alliance for Greater Philadelphia
https://www.preservationalliance.com/

The Delaware Valley Chapter of the Guild of Bookworkers
https://dvc-gbw.org/

Society of Winterthur Fellows
https://www.sowf.org/