Issue 110

SUBJECT:  In “The Portolan”, Issue 110:  Map used by General Braddock; Maps of the Caspian Sea; Maps of the Atlas des Enfans; COVID maps; and more 

This thrice-yearly journal with articles on maps, the history of cartography, and exploration is the largest and most frequent journal of its kind in the Americas.   Below is information on the Spring 2021 issue recently published and mailed. See for details on ordering the current or past issues of “The Portolan”.  That link also takes the reader to the contents list of all back issues and an index to those issues. The focus of the society and the journal is not solely Washington; topics are widespread in scope: The WMS – Exploring the World of Maps!  

ISSUE 110 (Spring 2021)

Issue 110 (Spring 2021), consisting of 78 pages, was published in March 2021 and is in distribution to all paid subscribers and print-issue members in good standing of the Washington Map Society. Digital-only members may access the issue online at the WMS website. Copies are available for purchase. 

MICHAEL MCNAMARA discovers a map by Lewis Evans that General Braddock used during the French and Indian War. EVELYN EDSON surveys the medieval cartographic representation of the Caspian Sea. PETER VAN DER KROGT details the many editions of an eighteenth-century school atlas. JOHN HESSLER reveals the attempts to map bat echolocation signals to track COVID-19. And there is more, including five book reviews. 


"The Portolan" is published three times per year; issue 111 is due for release in early August 2021. 


CONTENTS OF ISSUE 110 – Spring 2021

THE Map “famously used by General Braddock”, by Michael McNamara 

The Sea of Many Names: The Caspian Sea Between Gulf and Lake, by Evelyn Edson 

Seventeen Almost Identical Maps of the Americas: The Maps in the Different Editions of the Atlas des Enfans, 1758-1816, by Peter van der Krogt 

More Than Just Cases III: Using Bioacoustic Signals to Map the Animal Hosts of SARS-CoV-2, by John Hessler 

This regular feature, a bibliographic listing of articles and books appearing worldwide on antique maps and globes and the history of cartography, is compiled by Leah M. Thomas.  


Star Maps: History, Artistry, and Cartography, 3rd ed., (Reviewer: Gretchen Hause) 

Women in American Cartography: An Invisible Social History (Reviewer: Lauren Beck)  

Imagining the Americas in Print: Books, Maps, and Encounters in the Atlantic World (Reviewer: Donald L. McGuirk) 

Trail of Footprints: A History of Indigenous Maps from Viceregal Mexico (Reviewer: Diantha Steinhilper) 

Mapping Indigenous Land: Native Land Grants in Colonial New Spain (Reviewer: Diantha Steinhilper 


  1. WMS President’s Spring 2021 Letter 
  2. Washington Map Society Meetings: Spring 2021 
  3. Exhibitions and Meetings, by Tom Sander 
  4. Map Site Seeing, by Tom Sander 
  5. Ristow Prize Competition 2021 
  6. Cartographic Notes, by Tom Sander 
  7. Remembering Ed Redmond, by Ralph Ehrenberg 
  8. Remembering Don Perkins, by Tom Sander 



DR. LAUREN BECK holds the Canada Research Chair in Intercultural Encounter and is professor of Visual and Material Culture Studies at Mount Allison University, Canada. She researches early modern visual culture of the Atlantic world and has published several books in this domain, including Transforming the Enemy in Spanish Culture (2013), Visualizing the Text, from Manuscript Culture to the Age of Caricature (2017), Illustrating el Cid, 1492–Today (2019), and Firsting in the Early Modern Atlantic World (2019). She is preparing a book on the identity-related impacts of place names in the Americas.  

WMS member EVELYN EDSON is Professor Emerita of History at Piedmont Virginia Community College in Charlottesville, Virginia. She is the author of Mapping Time and Space: How Medieval Mapmakers Viewed Their World and The World Map, 1300–1492: The Persistence of Tradition and Transformation. Her most recent book is an edition and translation of Cristoforo Buondelmonti, Description of the Aegean & Other Islands, a fifteenth-century travel ac- count copiously illustrated with maps. Dr. Edson served from 2011–2019 as the Chair of the WMS Ristow Prize Competition.  

RALPH EHRENBERG is a founding member of the Washington Map Society and former chief of the Geography and Map Division of the Library of Congress.  

GRETCHEN HAUSE is the Director and Senior Specialist of the Book and Manuscripts Department at Hindman Auctions in Chicago. She has worked in the field for over a decade, and was previously a specialist in the Books and Manuscripts Department at Christie’s. She is a member of the Washington Map Society, the Chicago Map Society, the Grolier Club, and the Caxton Club.  

JOHN HESSLER is a Specialist in Computational Geography and Geographic Information Science at the Library of Congress. He is a Lecturer of Evolutionary Computation at the Johns Hopkins University and founder of the BIOCOMP Lab whose research uses geospatial data in conjunction with evolutionary computation to solve com- plex spatial analysis problems, like mapping COVID-19. This is his third article in a series on various mapping that supports understanding of the pandemic.  

DON MCGUIRK is a retired pediatrician with a keen interest in early exploration and maps of the New World. His published works on these subjects may be found in The PortolanImago MundiTerrae IncognitaeThe Map Collector, and the IMCOS Journal. McGuirk is a member of the Washington Map Society, The Philip Lee Phillips Society, The Society for the History of Discoveries, The Rocky Mountain Map Society, and the Texas Map Society. 

MICHAEL MCNAMARA is a member of the Washington Map Society and the Williamsburg Map Circle. He and his wife collect American maps from the colonial period with a special interest in Virginia and the Carolinas. Mike is the author of “A New Map of the Province of North Carolina: The Discovery of a 1737 North Carolina Manuscript Map” published in the Journal of Early Southern Decorative Arts (MESDA Journal, online at https://www.mesdajournal. org/2012/correct-map-province-north-carolina/). Mike has lectured at Colonial Williamsburg, the Williamsburg Map Circle, and the William P Cumming Map Society.  

THOMAS SANDER is Editor Emeritus of “The Portolan”. 

DIANTHA STEINHILPER is an Adjunct Professor at Dallas College in Dallas, Texas. She is the author of “Mapping Identity: Defining Community in the Culhuacan Map of the Relaciones Geográficas,” The Portolan 74 (2009): 11–34 (the 2008 Dr. Walter W. Ristow Prize winner), and most recently “An Emperor’s Heraldry, a Pope’s Portrait, and the Cortés Map of Tenochtitlan: The Praeclara Ferdinadi Cor- tesii as an Evangelical Announcement,” Sixteenth Century Journal 47, no. 2 (2016): 371–399. She has taught courses on pictorial maps of New Spain at Florida State University; The University of Nebraska; The University of Texas, Arlington; and The University of North Texas.  

LEAH M. THOMAS is Editor of “The Portolan” and Assistant Professor of English at Virginia State University in Petersburg.  

DR. PETER VAN DER KROGT wrote a dissertation on the produc- tion of earth and celestial globes in the Netherlands and is the author of the series Koeman’s Atlantes Neerlandici, a bibliography of atlases published in the Netherlands. He is a Jansonius curator and head of the Explokart research program at the Special Collections, Allard Pierson, The Collections of the University of Amsterdam. Peter is a member of the Editorial Advisory Board of this journal.  

Web Site for more information about the Washington Map Society:    
listing and index of the contents of all issues of 'The Portolan' is accessible at 
Also at  is information 

on how to order and locate issues of the journal, and procedures for prospective authors. 

Online links to several past articles are also at the “Portolan” web page. 

Membership in the Society and online registration now includes access online to all current and past issues of “The Portolan.”
Membership/Subscription Cost: Individual subscription cost is the same as membership and may be commenced at any time. To U.S. addresses, the cost is US $65.00 per year. To Canadian addresses the rate is US $70.00 per year. For other foreign addressees, the annual cost is US$ 85.00. Multiple year memberships/ subscriptions are available; the annual cost is reduced if a multiple year membership is chosen – see web site. All non-US address copies of the journal are sent airmail; the US Postal Service no longer offers a surface option. DIGITAL-ONLY individual memberships are available – US $25 the first year for new members; one year is US $40; the annual cost is reduced if a multiple year membership is chosen – see web site. Payment is accepted in US dollars only. Payment may be made via PayPal for membership/subscriptions and back issues.   Membership/ subscription/PayPal details form can be found at the Washington Map Society Web Site below. For further information, to include institutional subscription details, contact John Docktor at   

Current/Past Copies: Copies of 'The Portolan' beginning with issue 66 cost US$14.00 postpaid for US; $17 postpaid to Canada, and $21 to other foreign addresses. Payment is accepted in US dollars only and may be paid via check or PayPal. Issues 65 and earlier are available at a lower cost. A discount is given for orders of multiple issues. See for details on ordering the current or past Portolans. 

Posted By: 

Leah M. Thomas, PhD 

Editor, “The Portolan” 

Thomas F. Sander
Editor Emeritus, “The Portolan”

Washington Map Society Web Site: 
Portolan Web Site: