pennie_gone: G'morning from Mitchell, S.D.
Since you seem pretty interested in Lewis & Clark history, you might want to pull off at the rest stop on I-90 at Chamberlain, S.D., about 60 miles West of Mitchell. Heading West on I-90 it's an easy exit and re-entry to the rest stop and they have an outstanding museum/display of the Lewis & Clark expedition. In addition the rest stop sits high atop the ridge on the East side of the Missouri River, which as you know was the main waterway route followed by the expedition as far as the rockies West of Great Falls, Montana. Steve & Lynette
2014 Newmar 3103 BAYSTAR/Triton V10 w. Banks/05 Honda Element toad