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.

January 24, 2017 – Dr. Don McGuirk:
"The journey of the 'Yazoo Mingo' Moncacht-Apé and
its possible influence on the Lewis and Clark Expedition"


Dr. Don McGuirk
5:30 PM, Gates Room
Fifth Floor
Denver Public Library

Free & open to the Community


Moncacht-Apé was a Yazoo Indian interviewed by an early citizen of the Louisiana Colony, Antoine-Simon Le Page du Pratz, sometime between 1718 and 1734. Moncacht-Apé told him of completing travel to the Pacific Ocean and back, likely in the late 17th or early 18th century, 100 years before Lewis and Clark. On his return to Paris, Le Page du Pratz published a book that included the story of this Yazoo Indian. How this account affected the maps of North America and perhaps the very route of Lewis and Clark will be the subject of this PowerPoint presentation.

Dr. Donald L. McGuirk Jr. is a retired physician with a keen interest in early world maps, cartographic myths, and early exploration of the New World. He is a founding member and former president of the Rocky Mountain Map Society. He has been a member of the Philip Lee Phillips Map Society since its inception and a member of the Society for the History of Discoveries for over thirty years. Dr. McGuirk is a member, in long standing, of the Texas Map Society and the Washington Map Society. A summary of his cartographic publications can be found at:

Academia - Don McGuirk

Upcoming Meetings -- Save the dates!

Feb. 3-5, 2017

Miami International Map Fair
Sponsored by History Miami
Details at Miami Map Fair 2017


Mar. 21, 2017
5:30 PM at DPL

Professor John Kessell
"Whither the Waters; Mapping the Great Basin
from Bernardo de Miera to John C. Fremont"


Map Month: Maps as Art
May 2, 9, 16 & 23, 2017
Tuesdays at 5:30 PM
Denver Public Library
Conference Room B2

Guest Speakers:
May 2: Kate Stuart
May 9: Marcia Yonemoto and Tianlong Jiao
May 16: Susan Schulten
May 23: John Roman


Announcements by RMMS Members

Map Course
Lorraine Sherry has organized the third biennial series of guest lectures and exhibits by RMMS Members at The Academy for Lifelong Learning:
"The Power of Maps -- Exploring the Magic of Maps"
Dates: Thursday afternoons, February 23 to March 23, 2017 at 1:30-3:00 PM
Location: Calvary Baptist Church, 6500 East Girard Avenue, Denver CO 80224
Registration: The Academy for Lifelong Learning

Map Month - May 2017
Plans are taking shape for RMMS' annual "Map Month." The focus will be on Maps as Art. Meetings will take place in the B2 conference room at Denver Public Library on Tuesday evenings at 5:30 PM during the month of May, 2017. Meetings are free and open to the public.

  • May 2: Kate Stuart, Curator of Berger Collection at Denver Art Museum - "Maps in Paintings."
  • May 9: Marcia Yonemoto, Associate Professor at CU Boulder - "Maps as Art and Maps as Information."
    Tianlong Jiao, Curator of Asian Art at Denver Art Museum - "The Selden Map and Ming China's Martitime World."
  • May 16: Susan Schulten, Professor of History and Chair of the History Department at University of Denver - "Art and Cartography."
  • May 23: John Roman, Cartographic illustrator and author of The Art of Illustrated Maps - "The Crossroads of Cartography and Cartooning."

International Conference
Chet Van Duzer will be co-organizing an international conference next year with Lauren Beck:
"Canada before Confederation: Early Exploration and Mapping"
Dates: November 13-14, 2017
Location: Maritime Museum of the Atlantic, in Halifax, Nova Scotia.
Description: The conference foregrounds the commemoration of the 150th anniversary of the Confederation of Canada in 1867 with a look at the early exploration and mapping of the territory that now forms the country.
For further information, contact Lauren Beck,, or Chet Van Duzer,

Save the dates!
RMMS has been invited to chair the Society for the History of Discoveries (SHD) conference in Denver on September 20-22, 2018. The SHD conference formally opens Thursday evening with a reception, followed by SHD's program on Friday and Saturday morning. Stay tuned for further details.

More About RMMS








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