In Oliver Wiswell, Roberts again turns to the American Revolution with the loyalist Wiswell as hero. Good Maine Food, an eclectic cookbook of Maine origin, was compiled by Roberts's niece and personal secretary, Marjorie Mosser. It contains an introduction by Roberts in which he waxes eloquent about the joys of Maine cooking, recalling favorite dishes of his boyhood, prepared from recipes handed down over generations. Your Tonsils also show the humorous side of an otherwise serious author. I Wanted to Write is autobiographical in nature, revealing Roberts's feelings towards his profession.
Books comprises nearly half of the entire collection.
Corrections and comments in Roberts's hand can be found on many of the manuscripts, galley proofs, and page proofs. For almost all of the fourteen books represented in this collection, there is publicity in the form of notices, promotional material, and advertisements plus lengthy book reviews and brief publication blurbs. In addition, several titles also include maps and dust jackets. The Beinecke Library owns first edition copies of most of Robert's works. The second section, Shorter Works, consists of one short story and two essays.