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Hello all,
 
I catalog maps but I do not have any backgroud in geography. I've come across
a longitude notation that has me stumped and I was hoping some wise person
from the list could help. I'm doing original cataloging on a French map of
the Mississippi River Valley area from about 1748. The latitude notation makes
 sense but the range of longitudes shown is 280 - 299 with no indication of
east or west or a prime meridian. I've hunted for an answer in several map
reference works and works on the history of cartography but to no avail. Could
someone more knowledgeable than I please explain what is going on here? I would
 be eternally grateful for an answer. Thanks for the eyeball time.
 
Sheila Torres-Blank : Media and Special Projects Cataloger
 
Wichita State University Libraries : [log in to unmask]