Diaries are concerned with family affairs, farm work, rural social life, politics, genealogy, the author's service in the Union Army during the Civil War, and his duties as a Justice of the Peace; include daily notations on temperature, humidity, rainfall and other changes in the weather.

Diaries contain day-to-day weather records and information concerning the sale of Pierrepont lands in Jefferson, Lewis, and Saint Lawrence Counties, the development of Pierrepont Manor, and periodic trips to New York City. Also, photocopies of Irving Parmeter's articles on the Pierrepont journals, 1830-1831. Includes Pierrepont's Journal THE TAMING OF THE WILDERNESS edited by Inez B. McConnell. Also, records of the Zion Episcopal Church, Pierrepont Manor, New York.