- Walker Lith. & Pub. Co
- Digital Commonwealth
- Arnold Arboretum Horticultural Library
Another printed copy of the version of Plan of the AA is bound into a copy of 1912 Guide edition to the Arnold Arboretum: CAC So7 g 1912 Also used without apparent change in the 1925 version, aside from enlargement. Walker Lith. & Pub. Co.
- Arnold Arboretum
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