preface by David Porter books & textbook
Report on the Exploration in the Yukon District, N.W.T. and Adjacent Northern Portion of British Columbia 1887
George M. Dawson N. Alexander Easton preface by David Porter
Yukon Historical and Museums Association /1987T Paperback / 286 Pages
isbn-10: 0921114001 / isbn-13: 9780921114000
