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The Mentor: Painters of Western Life, Vol 3, Num. 9, Serial No. 85, June 15, 1915
Arthur Hoeber
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The Mentor: Italy Under War Conditions, Vol. 6, Num. 23, Ser. No. 171, January 15, 1919
E. M. Newman
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The Mentor: Game Birds of America, Vol. 1, Num. 34, Serial No. 34
Edward Howe Forbush
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The Mentor: The Story of Coal, vol. 6, Num. 6, Serial No. 154, May 1, 1918
Charles Fitzhugh Talman
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The Mentor: The Contest for North America, Vol. 1, No. 35, Serial No. 35
Albert Bushnell Hart
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The Mentor: Venice, the Island City, Vol. 1, Num. 27, Serial No. 27
Dwight L. Elmendorf
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The Mentor: Reclaiming the Desert, Vol. 6, Num. 17, Serial No. 165, October 15, 1918
C. J. Blanchard
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The Mentor: American Pioneer Prose Writers,
Hamilton Wright Mabie
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The Mentor: The Wife in Art, Vol. 1, Num. 28, Serial No. 28
Gustav Kobbé
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