From collection Mount Desert Island Historical Society - Library Collection
A Key to the National Arithmetic Exhibiting the Operation of the More Difficult Questions in that Work: For the Use of Teachers Only
Guide for teachers; appears to cover almost all grades, but method also seems obscure. Inscribed on front cover, Lyman Smith.
Details
Hardcover 206 pps. Spine partially unattached.
Row # 2 Unit # 3 Shelf # 4 Arith. & Math.
