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File contains 4 autograph letters signed, 1 typed letter signed, 2 typed letters (unsigned). Includes correspondence with Dr. Casey A Wood.

Letter from C.B. Kingston to F.D. Adams.

Letter from L.O. Howard to F.D. Adams on stationery of Old Dominion Copper Mining and Smelting Co.

Letter from Arthur A. Cole, Temiskaming and Northern Ontario Railway.

Letter from W. A. Carlyle.

Letter from editor of The Engineering Magazine.

Letter from S. F. Kirkpatrick, School of Mining, Kingston, Ontario.

Letter from printer regarding Harrington portrait.