Here is the review I did on Goodreads of a very interesting book, The Suppressed History of America by Schrag & Haze. It wasn't exactly what I expected, but ended up being very interesting regarding the controversial death of Meriwether Lewis, particularly.
Excellent account of the Lewis & Clark Expedition with chapters dealing with earlier events on this Continent that would surprise most people. The book also gives four possible scenarios explaining Lewis's death, one of which is so well supported by the historic events leading up to it (involving the treason of Aaron Burr and James Wilkinson and others) that it leaves little doubt what truly happened to the American hero. Lots of intrigue and cover-ups in America's past...not surprising, since we have that in the present!