EARLY DAYS AT THE FOX-WISCONSIN PORTAGE by Ina Curtis.  Published by the Columbia County Historical Society, 1981.  Large softcover, 56 pages.  Illustrated with some small black-and-white drawings.   Very Good- condition.  There's a small sticker on the blank front endpaper, and a small stain on the front cover. Otherwise clean, tight and unmarked.  A nice copy of this book about Wisconsin history (military forts, Native Americans, French explorers, etc.).