Materials include a letter from John K. Kane to Jane Duval Leiper Kane (Jeanie) saying, that “Say” (possibly Thomas Say who was also a member of the American Philosophical Society) is very sick and asking if she would leave the Mills to come stay with him instead. No date on item. Date of production not identified.

Materials include a letter from John K. Kane to Jane Duval Leiper (Jeanie), saying that he boarded a steamboat, paid a visit to her house, and that supplies will be sent soon. Date of production not identified.

Materials include a letter from John K. Kane to Jane Duval Leiper Kane with advice about developing a maternal relationship with their first child, Elisha Kent Kane. Dated July 10, approximately 1821.

Letter from John K. Kane to Jane Duval Leiper Kane saying that he has only spoken about twenty words in the House session but will correct that when the District Court Law reaches the floor; he asks Jane to send him several books from his home library. Dated December 12, 1824.

Letter from John K. Kane to Jane Duval Leiper Kane saying that he has been placed on some important committees and secretly agreed to provide daily information on the House's business to John Norvell of the Franklin Gazette, a Democratic-Republican newspaper. Dated December 15, 1824.

Materials include a letter from John K. Kane to Jane Duval Leiper Kane; it addresses her objections to a four-day tour, it mentions that their is marriage is now three months old, and it says that her presence is missed. No date on item. Dated approximately July 1819.

Letter from John K. Kane to Jane Duval Leiper Kane saying that he has met many of the prominent men in Washington through connection with his cousin, Elias Kent Kane (1794-1835), and he has accepted invitations from Judge Thomas (possibly Jesse Burgess Thomas), Mr. John Randolph, and Mr. Martin Van Buren. Dated April 1, 1823.

Letter from John K. Kane to Jane Duval Leiper Kane saying that he spent the evening with Vice President John C. Calhoun and thinks he is a very able man and politician. He visited President John Quincy Adams with General Stephen Van Rensselaer and Mr. Joseph Hopkinson; he said he liked Adams but not as much as Calhoun. He tells Jane all about the people and politicians he is meeting through his cousin Elias Kent Kane's connections. Dated approximately 1825.

Letter from John K. Kane to Jane Duval Leiper Kane saying that he is working hard to defend Franklin Peale. Dated January 5, 1825.

Letter from John K. Kane to Jane Duval Leiper Kane saying that they are currently examining the conduct of several judges. Dated January 7, 1825.