Collected by Jeanne Kleinfield Welcher (1923-2010), great granddaughter of Samuel Putnam Avery Sr. (1822-1905), this collection contains materials pertaining to the philanthropic efforts of the Avery Family during the late nineteenth and early twentieth centuries in the United States. The collection contains institutional documents, professional and personal correspondence, newspaper clippings, visual and research material, and personal affects pertaining to three generations of the Avery Family.