Mainly paperwork related to the finances of Walter Cass Newberry and his cousin, Henry Warner Newberry. Also materials relating to Newberry's business ventures and his Civil War regiment, the 24th New York Cavalry.

The majority of the financial papers consist of correspondence between Walter Cass and Henry Warner, related to the status of the Walter L. Newberry inheritance case being pursued by said relatives, as well as the final documentation naming the decendants per stirpes. There are also letters to Henry Warner Newberry from his creditors, a “Petition of Debtor—Bankrupt” filed by Henry Warner Newberry, correspondence from William B. Candee and Louise Candee, Henry Warner Newberry’s brother-in-law and sister respectively, and Henry Warner Newberry’s Last Will and Testament.

Also in the collection are Walter Cass Newberry’s cash book and impression books, materials related to Walter C. Newberry’s business ventures, including the hops and barley business and the buying and renting out of land and buildings, correspondence between Walter Cass Newberry and members of his old regiment, the 24th New York Cavalry, documents and photographs related to the regimental history of the 24th New York Cavalry, and a transcript of Walter Cass Newberry’s official military record.