Kent,

Anita is correct about the Library of Congress, but a quick check of 
their on-line catalog yielded nothing for me ...

Make sure you check Louis Karpinski's "Bibliography of the Printed 
Maps of Michigan, 1804-1880"

I would assume Hart is listed there, but I don't know if he annotated 
locations for the various holdings.

Mark
-- 

Mark C. Branstner, RPA
Historic Archaeologist

Illinois Transportation
Archaeological Research Program
University of Illinois at Urbana-Champaign
209 Nuclear Physics Lab, MC-571
23 East Stadium Drive
Champaign, IL 61820

Phone: 217.244.0892
Fax: 217.244.7458
Cell: 517.927.4556
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"I hope there's pudding" - Luna Lovegood (HP5)