Series IV. Relatives’ Papers contains correspondence, legal papers, and receipts for Nathaniel’s children, his parents, his brother, and in-laws—Chase, Buffington, and Nichols. The majority of the papers of the immediate family are letters from William to his siblings, Rebecca, Abbott, and Nathaniel. There are also letters from Abbott to Nathaniel about his voyage and from Rebecca, after her return from China, to her sons Abbott and William, and her daughter-in-law Augusta. Correspondence to William includes letters from business associates, from friends at the time of Abbott’s death, and a letter from John Greenleaf Whittier (circa December 1867). There are also letters from William to his wife, Augusta. Nathaniel Kinsman Sr.’s (1775-1808) papers contain an invoice of goods on the schooner Four Sisters, ships’ orders, and an invoice book of the Minerva. Papers for his wife, Deborah Webb, are predominately receipts and insurance forms on their Brown Street house. The papers of Joshua Kinsman, Nathaniel Kinsman Jr.’s (1798-1847) brother, include records of the brig Waverly, ship Canova, miscellaneous business correspondence between the brothers, account of sales for the schooner Shepardess, and miscellaneous receipts. The shipping invoice and account book (Volume 3) contains accounts and an inventory for Joshua’s estate. The bulk of the Chase family papers are letters to Maria Chase from her sister Rebecca’s suitor, Edward Robinson. In addition there are letters from Francis and Edward Chase to their family, receipts, and estate papers for Stephen Abbott. Papers of the Buffington family contain letters from James while on voyages and a bill of sale for the bark Prudent. Included in the Nichols family papers are legal documents and correspondence to Mary and William Frye Nichols.