- FondsAllen - Papers of Frank James Allen
- SeriesE - Cambridge Antiquarian Society material
- FileE3 - Papers and photographs relating to the ruin at Newport, Rhode Island, the Round Church, Cambridge, and the windmill at Chesterton, Warwickshire
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- Item2 - Drawings of features from the Ruined Mill at Newport, Rhode Island
- Item3 - Black and white photograph of the windmill at Chesterton, Warwickshire
- Item4 - Black and white photograph of the interior of the Round Church, Cambridge
- Item5 - Proof sheet with reproductions of photographs and drawings of the interior of the Round Church, Cambridge, of the ruin at Newport, Rhode Island, and of the windmill at Chesterton, Warwickshire
- Item6 - Fred A. Arnold, 'An account of the English homes of three early "proprietors" of Providence: William Arnold, Stukeley Westcott and William Carpenter' (Providence, 1921)
- Item7 - Autograph letter signed from Fred A. Arnold, Providence Rhode Island, to Allen
- Item8 - Typescript letter signed from Philip Ainsworth Means, Lenox Mass., to Prof. Ellis H. Minns, Cambridge
- Item9 - Black and white photographs of the Ruined Mill at Newport, Rhode Island
- Item10 - Typescript letter signed from Philip Ainsworth Means, New York, to Allen