The Wanderer: An Alaska Wolf’s Final Journey. This book is the first ever to chart a wolf’s movements for day by day for an extended period of time. Author Tom Walker draws on unparalleled access to a Yukon-Charley Rivers National Preserve’s wolf research study to share the story of Wolf 258, nicknamed "the Wanderer." Relying on a GPS collar that recorded the animal’s coordinates each day, biologists tracked Wolf 258 as he moved through the wilderness---and, astonishingly, traveled more than 2600 miles in less than six months.