Series II. John James Currier Papers includes business, personal, and mayoral correspondence, historical and genealogical correspondence, historical lectures, and genealogical notes. The business, personal, and mayoral correspondence documents the wide range of John's activities. Personal letters include notes from his niece Suzie and nephew David P. Coffin (1879), letters regarding the Tuesday Evening and Unitarian Clubs, of which John was a member, condolences received following the deaths of his father (1887) and his wife (1910), and correspondence from a windmill company concerning the installation of a machine at John's house (1878-1879). Personal correspondence from John's wife Susan may be found in the Family Papers (B5 F8). Business letters include correspondence regarding John's interests in railroad and bank stocks and his activities as agent for estates and land, such as the Moody estate (1877-1879), and the estates of Benjamin Perley Poor (1887), and Mary C.L. Fitch (1912). Once John was elected mayor of Newburyport in 1879, he researched and worked on a number of projects including sidewalk and bridge construction, steamrollers for the roads, enlargement of the jail, erection of a statue of George Washington, and Newbury's 250th anniversary celebration. Following the bulk of the business and personal letters are folders of correspondence regarding the commemorative service and memorial for Honorable Caleb Cushing, and John's memorial on his wife, Susan (Page) Currier.

The historical and genealogical correspondence contains information regarding the Currier, Titcomb, Lunt, Farnum, Hay, Bayley, Colby, Thornton, Carr, and Felton families, as well as letters concerning shipbuilding in Essex County and Maine, house histories, the Yankee Hero spoons, and ship disasters of Plum Island. Also included is correspondence discussing a number of John's books. The genealogical notes include memorandums and notebooks which also provide information concerning the Currier family genealogy and the history of shipbuilding. John's miscellaneous papers contain financial, legal, and miscellaneous papers such as his estate inventory, book copyrights, costs of remodeling the Chickering house (1872), costs and lists of guests invited to the Newbury 250th anniversary, and an 1852 notebook on how to calculate the magnitude of lunar eclipses.