Photographs

Correspondence, diaries, clippings, photographs, and other material relating largely to the engineering interests of John Cresson Trautwine, Sr. (1810-83), II (1850-1924), and III (1878-1949). Papers concern railroad promotion and construction (1844-49); experiences of Trautwine, Sr., while he worked in New Granada, and conditions in that province (1844-49); engineering matters; student letters; papers relating to Samuel Ashbridge, former mayor of Philadelphia (1906), the 1912 presidential campaign, the League to Enforce Peace (1916-18), and a letter (1887) from Oliver Wendell Holmes to Mrs. Trautwine. Correspondents include William H. Balch, Clinton Lathrop Bogert, John Ripley Freeman, the American Society of Civil Engineers, and the Philadelphia Bureau of Water.