Time for one more follow-up to our recent posts Monday: Map Day! – Wisconsin’s Federal Roads in 1840 and JMC, the Army, and the Military Road, 1835-1840. As I mentioned in that “Monday: Map Day!” post, I recently found some unique maps and related documents in the digitized collections of the National Archives and Records Administration (NARA), in particular a group of maps and drawings created in 1840 by members of the army’s Corps of Topographical Engineers under the supervision of Capt. T. J. Cram.
Before they get lost in my files, I thought I’d share the other documents from Capt. Cram’s 1840 survey that have survived and been digitized by NARA. I’ve already said quite a bit about these 1840 maps and drawings; now I’m most interested in gathering the remaining 1840 documents and their bibliographic citations here for reference. So not much commentary today, but lots of images. And—as always—I recommend clicking on each item to open a larger, higher-resolution image in a new window.
Bridges on the Green Bay Road
The first item is of particular interest for Clark House history fans, as it provides additional details about old Washington/Ozaukee county’s first federal road, the north-south route connecting Fort Dearborn, Chicago, to Fort Howard at Green Bay. The drawing is part of a larger document; this portion is titled “Road from Ft. Howard, by Milwaukee & Racine, to the Northern boundary of Illinois.”

NARA, full citation, below.
The drawing illustrates construction details of the simple wooden bridges that were part of the Green Bay Road, circa 1840. This road, and these bridges, comprised the main north-south transportation route for the U.S. Mail and for immigrants and settlers of the new counties of southeast Wisconsin Territory. The Clarks, Turcks, Bonniwells and other early Mequon pioneers would have crossed bridges like these on their trips to and from Milwaukee, Grafton, Port Washington and beyond on the Green Bay Road.
And that’s not all…
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