The Rocky Mountain Map Society is a non-profit organization dedicated to the study and appreciation of maps and other items of cartographic interest. The Society was formed in 1991 and is based in Denver, Colorado.

Most meetings are held on Tuesday evenings at the Denver Public Library, 5th Floor, Gates Room, at 5:30 PM.

Dr. and Mrs. Don McGuirk invite RMMS Members to their home to view their "Sea of the West" Collection.
6:00 PM on Sunday August 2, 2015.

Don McGuirk photo

Dr. Don McGuirk

Private reception:
Soft drinks, tea & coffee, and light hors d'oeuvres will be served.
RSVP: Don McGuirk


Dr. Don McGuirk is an avid map collector with a special interest in the mythical "Sea of the West." From 1700 to 1780 some maps of North America depicted an inland sea of enormous proportion. The origin of this geography and its unique history is often unknown, even to the most avid map enthusiast.

Don McGuirk is a retired pediatrician, map collector and independent researcher living in Denver, Colorado. He is a past president of the Rocky Mountain Map Society. He has authored the electronic book Mer de l’Ouest, the Last Great Cartographic Myth. His particular interest in mythical geographies now spans well over two decades. He has given lectures on cartography at the British Library, the Society for the History of Discoveries, and the Colorado Academy for Lifelong Learning.

See more at: Adventures in Maritime and Island Exploration

Please login and see Members Only Area for details and contact information.
If you are a current RMMS Member and did not receive a mailed invitation, or if you need login/password information, please e-mail Lorraine Sherry, RMMS Secretary.

Upcoming Meetings -- Save the dates!

Sept. 15, 2015

Camille Bradford
"William Henry Jackson: Artist and Mapmaker in his later years"
5:30 PM at Denver Public Library.
This program is free and open to the community.
View Lecture Announcement


Oct. 19-23, 2015

The Annual International Map Collectors' Symposium (IMCoS)
Capetown, South Africa.
Click here for IMCoS 2015 Events.


Oct. 20, 2015

Joseph Kerski
"Examining 100 Years of USGS Topographic Maps in a Web-Based Platform"
5:30 PM at Denver Public Library.
This program is free and open to the community.
View Lecture Announcement


Announcements by RMMS Members

Check out the Denver Public Library, Western History and Geneaology Department's New Collection of Digital Maps of Denver.
View Description
Link to DPL's Collection of High-Resolution Downloadable, Digital Maps of Denver

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