This collection consists of the papers that document the history of the of the Rochester Young Men's Christian Association (Y.M.C.A.). The materials date between 1854 and 1981. The papers are comprised of photographs, brochures, reports, periodicals, correspondence, scrapbooks, and newspaper clippings.

The papers and records of the Monroe County Penitentiary on South Avenue in Rochester, N. Y., are arranged in five categories: correspondence, financial, legal, attendance reports, and miscellaneous.

Correspondence, photographs, genealogical and biographical material relating to Thomas Crawford Alexander and to the Alexander and Lumpkin families, presumably amassed by John S. Mayfield, a relative. Other surnames in the collection include Hale, Bain, Trulove, Pickett, Chamberlain and Robertson.

The Ella Wells Stone Collection of Henry Wells' Papers focuses mainly on the biographical aspect of his rise as the famous founder of the American Express Company, co-founder of the Wells Fargo Express Mail and Banking Service, and most notably, founder of Wells College in Aurora, New York

Correspondence, diary, expedition journal, financial material, scientific notebook and sketches, photographs, published material, including articles and newspaper clippings, and scrapbooks. Correspondence (1854-1902) includes that of Alexander Agassiz, Charles E. Beecher, E.D. Cope, James D. Dana, J.S. Diller, G.K. Gilbert, G. Brown Goode, Asa Gray, Robert T. Hill, Anna Hyatt Huntington, Hyatt’s father, Alpheus Hyatt, Audella Beebe Hyatt, Jules Marcou, Harriet Randolph Hyatt Mayor, A.S. Packard, Charles Schuchert, and Charles Walcott.

The Riley-Jones Family Papers includes correspondence dating from the late 1800s through the early 1900s. The earliest letters were exchanged between Will Jones and his wife Gertie, as well as their descendants. Correspondence from the 1860s details the interactions of Gertie and her friends and family during her courtship with Will. After the couple's marriage, Will traveled for his law firm and exchanged a large number of letters with his wife, especially during the early 1870s. These letters are usually written in Gertie's purple ink and contain romantic overtures and discussions of family matters. In addition to the personal letters between Will and his wife, the collection also contains a small number of letters related to Will's business. The letters from the beginning of the 1900s detail the lives of Gertie and Will's children. Willie originally worked as a lawyer for the family firm and, much like his father, traveled extensively. In 1913, Willie spent a few months in El Paso, Texas and writes in detail about the war for Mexican Independence, as well as a local bull fighting match that took place.

The collection contains correspondence, including letters from Thomas Wentworth Higginson and Thomas Starr King concerning her father Frederick L.H. Willis and his suspension from Harvard Divinity School in 1857 for spiritualistic activities. Much of the collection consists of her writings on various literary and historical topics and her poetry.

American newspaper publisher. Collection includes correspondence, manuscripts and printed material.

The collection of George Eastman's correspondence consists of over 700 letters. The first letter by him is dated November 20, 1864 and the last March 11, 1932. A little over half of the letters are personal ones to his mother and niece. Occasionally there are references in these letters to business affairs, especially in the early letters to his mother. There is a sprinkling of business letters, both to Mr. Eastman and to others by him. The rest of the collection is made up of 75th (1929) and 77th (1931) birthday greetings (including ones in 1929 from President Herbert Hoover and Thomas A. Edison), and "thank you" letters from friends to whom he had sent copies of his book, Chronicles of an African Trip, published privately in 1927, and of his biography, George Eastman, by Carl W. Ackerman, which was published in 1930.