To the Public:
Books of travels, journals, and voyages have become so numerous, and are so frequently impositions on the public, that the writer of the following sheets feels under an obligation to explain, in some measure, the original circumstances that led to the production of this volume. Soon after the purchase of Louisiana by an enlightened administration, measures were taken to explore the then unknown wilds of our western country - measures founded on principles of scientific pursuits, combined with a view of entering into a chain of philanthropic arrangements for ameliorating the condition of the Indians who inhabit those vast plains and deserts. His Excellency, Meriwether Lewis, then a captain of the first regiment of infantry, was selected by the President of the United States, in conjunction with Captain C. Clarke Wm. Clark, to explore the then unknown sources of the Missouri, and I was chosen to trace the Mississippi to its source, with the objects in view contemplated by my instructions; to which I conceived my duty as a soldier should induce me to add an investigation into the views of the British traders in that quarter as to trade, and an inquiry into the limits of the territories of the United States and Great Britain. As a man of humanity and feeling, I made use of the name of my government to stop the savage warfare which had for ages been carried on by two of the most powerful nations of aborigines in North America.
