Correspondence, diaries, letterbooks, financial papers, writings, scrapbooks, and memorabilia of the Farnam family of New Haven, Connecticut, 1721-1929. The papers of Henry Farnam (1803-1883), and two of his sons, Henry Walcott Farnam (1853-1933) and William Whitman Farnam (1844-1929) form this collection. The papers of Henry Farnam include personal and professional correspondence concerning his family, life in New Haven, and the building of several canals and railroads in Connecticut and the Midwest. Materials documenting the New Haven and Northampton Company, Chicago and Rock Island Railroad, Mississippi and Missouri Valley Railroad, Northern Indiana Railroad, and Peoria and Bureau Valley Railroad is arranged here. The papers of Henry Walcott Farnam include personal and professional correspondence, financial papers, writings, subject files and scrapbooks relating to his family, life in New Haven, student and teaching experiences at Yale, membership in local, state, and national academic and reform organizations, and philanthropic activities on behalf of educational and charitable institutions. The papers of William Whitman Farnam include correspondence and topical files relating to family matters, Yale University, and New Haven Park Commission activities.