Winkenwerder, Hugo, 1878- Forestry in the Pacific Northwest, by Hugo Winkenwerder ... with foreword by Charles Lathrop Pack ... - Washington, D.C., American tree association, 1928. - 48 p. 23 cm. LCCN: agr29001519 Subjects--Topical Terms: Forests and forestry--Northwestern States. LC Class. No.: SD143 / .W5 National Agricultural Library Call No.: 99.18 / W72F