By way of Lawrence Summers' post to the MapHist list, I just learned of the following public lecture, to be given by John Hessler at the Library of Congress on the 25th of February, 2009:
John W. Hessler, a senior reference librarian in the Geography and Map Division of the Library of Congress and fellow of the Royal Geographical Society, will present "In the Footsteps of Caesar: Searching for the Physical and Epigraphical Remains of Roman Centuriation and Surveying in Tunisia" at noon on Wednesday, Feb. 25. The lecture will be held in the Geography and Map Reading Room, in the basement level of the James Madison Building, 101 Independence Ave. S.E., Washington, D.C.
Sponsored by the Geography and Map Division, the event is free and open to the public; tickets and reservations are not required. The lecture is part of the division's "Map Talk" series.
In his lecture, Hessler will provide a brief description of the cartography and surveying techniques employed by the Romans in North Africa; a description of a sixth-century manuscript known as "Corpus Agrimensorum," which spells out how the Romans surveyed their territories; and a travel log describing his search for the physical remains of Roman surveying practices in Tunisia and Southern France.