» Post Mark Museum and Research Library    Dedicated to collecting and preserving post marks and postal history around the world. Located in Lyme Village near Bellevue, Ohio.    http://www.postmarks.org/museum/

» Spellman Museum of Stamps and Postal History    Presents a worldwide collection of stamps and covers. Includes schedule of events, details of exhibits, library, memberships, hours, admission and directions. Located in Weston, Massachusetts.    http://www.spellman.org/

» The British Postal Museum & Archive    Visitor information, details of collections and exhibitions, online catalogue, and educational resources.    http://www.postalheritage.org.uk/