Notice: Access to Special Collections material, the Reading Room, and Instruction will temporarily be suspended starting on Aug.12, 2024 as the collection will be moved from the basement to 3 East. Normal operations are anticipated to resume late in the semester. Read more for current updates.
Notice: Access to Special Collections material, the Reading Room, and Instruction will temporarily be suspended starting on Aug.12, 2024 as the collection will be moved from the basement to 3 East. Normal operations are anticipated to resume late in the semester. Read more for current updates.
Notice: Maintenance affecting the library catalog will occur on July 26-29. The catalog will be available except for newly added e-resources, which will not appear until after the maintenance is completed and the backlog of changes can be delivered - possibly 10 days. In addition, renewals and changes to circulation status will not be visible in the EDS interface during this time.
Notice: Maintenance affecting the library catalog will occur on July 26-29. The catalog will be available except for newly added e-resources, which will not appear until after the maintenance is completed and the backlog of changes can be delivered - possibly 10 days. In addition, renewals and changes to circulation status will not be visible in the EDS interface during this time.
Notice: Due to ongoing construction, 4 East is currently closed to the public.  To obtain items located on 4 East, please place an online request for the item to be paged for you using the ‘Place Request’ button in the catalog. Please visit our Circulation FAQ page for assistance in using our catalog.
Notice: Due to ongoing construction, 4 East is currently closed to the public.  To obtain items located on 4 East, please place an online request for the item to be paged for you using the ‘Place Request’ button in the catalog. Please visit our Circulation FAQ page for assistance in using our catalog.
The Clason Map Co. Road Map & Atlas Site

Clason Road Map & Atlas Site

Collectors of Clason state road maps issued between 1923 and 1931 are presented with challenges around determining map publication dates. Unlike Rand McNally and Gousha, the Clason Map Company typically did not place dates or date codes on its products during this period. A systematic review of the maps contained in Clason state road maps, touring atlases, and Green Guides reveal that the road legends and other map symbols varied over the years in systematic ways. This Clason Map website, with content developed by Mark Greaves and Carl Liedholm, represents an attempt at providing a guide to dating these maps.