Bob and Sandy Armstrong, together with their sturdy sons, Dick and Roger, are but types of the settlers who opened up the rich territory of the Mississippi Valley, as well as the Great West. Their kind is not so numerous now, at least in our own country, since the need for such adventurous souls has become less acute. In many places, however, like the Canadian Northwest, they can still be met with, forging the links that will bind the wilderness to civilization.
If you boys have found one half the enjoyment in reading of the exploits of our young pioneers that the task has afforded the author in writing of them, his aim, which has been to instruct as well as to entertain, will have been accomplished.