DAVID T. MASON, member, Society of American Foresters. A U.S. Forester, 1907 1915, he later taught forestry at a major university, resigning in 1921 to become a consulting forest engineer. 1956 Weyerhaeuser Timber Company Ad, A4551A.

DAVID T. MASON, member, Society of American Foresters. A U.S. Forester, 1907 1915, he later taught forestry at a major university, resigning in 1921 to become a consulting forest engineer. 1956 Weyerhaeuser Timber Company Ad, A4551A.  

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