He has edited: •
The Poetical Works of Winthrop Mackworth Praed (New York, 1860) •
The Hutchinson Papers, with William Appleton (2 vols., Boston, 1865), for the Prince Society • ''Dunton's Letters'' (1867), for the Prince Society •
Andros Tracts (3 vols., 1868-'74), for the Prince Society •
A Record of the Descendants of Captain John Ayres of Brookfield, Mass (1870, Boston, T.R. Marvin & Son, 88 Pages) •
Records of the Boston Record Commission, which he established in 1875 (20+ vols.) • ''Sewall's Diary'', co-editor, writing all the local notes (Boston, 1875-'82) He prepared the a codification of laws for adoption, his codification being passed by the legislature almost unchanged in 1876. Other political works: •
Revision of the City Ordinances, with Henry W. Putnam (1882) •
Report on the State Seal, accepted by the legislature in 1885 He reprinted in facsimile the "Laws of Massachusetts of 1672" (Boston, 1887). Whitmore contributed to various magazines, native and foreign, and was the author of many genealogies, the most important of which are the families of Temple, Lane, Norton, Winthrop, Hutchinson, Usher, Ayres, Payne, Whitmore, Lee, Dalton, and Wilcox. Other works: •
Handbook of American Genealogy (Albany, 1862), reprinted with additions as
The American Genealogist (1868) •
The Cavalier Dismounted, an essay (Salem, 1864) •
Elements of Heraldry (Boston, 1866) •
Massachusetts Civil List, 1636-1774 (Albany, 1870) • ''Copp's Hill Epitaphs'' (Albany, 1878) •
History of the Old State-House, issued by the city of Boston (1882) •
Life of Abel Brown, the engraver (Boston, 1884) ==Notes==