Wish You Were Here
- Snapshots, sketchbooks, letters and postcards from artists on vacation.
- http://artarchives.si.edu/exhibits/pastexhibits/vacations/

Marge Griffiths Busby at Stamp Galore
- Original mail art drawn by Marge Griffiths Busby in 1948 and 1949 and sent to her son who was serving during the Korean conflict.
- http://www.stampsgalore.com/mlartnvlops/mlartenv.html

Mail Art From The 1984 Franklin Furnace Exhibition
- An article about the exhibition for Franklin Furnace called "Mail Art Then and Now" which was curated by Ronny Cohen. Included are articles about mail art by E.F. Higgins III, Valery Oisteanu and Carlo Pittore.
- http://www.franklinfurnace.org/history/flow/mailart/mailart.html

Now is Always and Always is Gone
- Historical Exhibit of East European Mail-Art in Schwerin.
- http://www.leftcurve.org/LC21WebPages/eeurmail.html

BMoCA Mail Art Gallery
- The Boulder Museum of Contemporary Art Exhibit features work in the theme "A Sense of Place."
- http://www.bmoca.org/mail_art_gallery/

Spare Room: M@ilart
- Commentary, mail art history, and information on the Dead White Mail project.
- http://www.spareroom.org/mailart/mailart.html

The TAM Rubber Stamp Archive
- An overview of the TAM-Rubber Stamp Archive which began in 1980. Information about rubber stamp prints by mail artists worldwide.
- http://www.iuoma.org/rub_arch.html

Vortice Argentina Project Documentation
- This site contains the documentation for art projects organized by Vortice Argentina and by other Argentinean artists including international mail art and visual poetry projects.
- http://www.artecorreo.com.ar

The Millennium Project
- Introduction and documentation and for Sticker Dude's Limping and Soaring to the Millennium mail art call with gallery pages displaying 150 submissions.
- http://www.raggededgepress.com/pages/results.htm

P22 Mail Art
- Correspondence between Daniel Farrell and Richard Kegler, the site documents some of the hundreds of pieces from this 6 year project.
- http://www.p22.com/projects/mail.html

The Mailed Art of Ray Johnson
- Catalog for the exhibition "Ray Johnson" held at the Galleries at Moore, November 1-December 15, 1991. Provides a history of Johnson's career, as well as examples of his work. Part of the Galleries at Moore exhibition.
- http://thegalleriesatmoore.org/publications/johnson.shtml

Mailartist.com
- Education and resources for mailart, ATC's, postcards, envelopes, and artistamps.
- http://www.mailartist.com

Mail Art Show Reeperbahn
- Online documentation of mail art project "Mail Art Show Reeperbahn" from the networkers Merlin and Hans Braumüller with the participation of 127 mail artists from 24 countries around the globe.
- http://www.crosses.net/elbmail/index.html

The Electronic Museum of Mail Art (EMMA)
- The envelope is the museum. FAQ, gallery, library, and links.
- http://www.actlab.utexas.edu/emma/

Baron's Mail Art Collection at the CPL
- A large assemblage of mail art at Cleveland Public Library documenting the community that produced it from 1975 to 1985.
- http://www.cpl.org/ExhibitHall.asp?FormMode=Exhibit&ID=23