Mathews, Richard K. The Yukon. Illustrated by Bryan Forsyth. - [1st ed.] - New York Holt, Rinehart and Winston [1968] - 313 p. illus., map. 22 cm. - Rivers of America . LCCN: 68021745 //r71 Subjects--Geographic Terms: Yukon River. LC Class. No.: F912.Y9 / M3 Dewey Class. No.: 979.8/6