Manuscript Group 427: BALDWIN-HAMILTON COMPANY RECORDS [ca. 1834-1962]

The Baldwin Locomotive Works of Philadelphia, founded in 1832, had built more steam locomotives than any other institution in the world by the time construction was phased out in the early 1950s. Late in the 1890s, in conjunction with Westinghouse Electrical Manufacturing Company, Baldwin built small electric locomotives for mining and industrial use. By the mid-1920s, the company started experimenting with "oil" and diesel engines, and by 1939, was producing diesel electric locomotives. In the early 1950s, Baldwin merged with the Lima-Hamilton Company and the Austin-Western Dump Car Company and became the Baldwin-Lima-Hamilton Company, which continued until 1972.

The collection consists primarily of the engineering drawings for the locomotives produced, as well as various related indexes, registers, order books and specification books. The indexing system is incomplete and complicated and some gaps exist in the collection. The drawings are semi-processed at this time. For an explanation of how drawing searches can and cannot be done within our collection, detailed searching instructions are available. *** Please note: These are not searches that you can do yourself on our website. We have no online indexes or databases or digitized images of Baldwin records available over the internet. The instructions merely explain what sorts of searches staff can do for you, or the types of searches you can do if you visit the State Archives yourself or acquire copies of our records.

If we do not hold the records you are looking for, you may wish to consult a descriptive list of other institutions possessing Baldwin records.



Engineering Department

  • Alphabetical Card File of Electric and Diesel Locomotive Purchasers, [ca. 1906-1955]. (1 carton) {#427m.66} [Description]
  • Alphabetical Card File of Foreign Countries Purchasing Locomotives, 1880-1907, 1952. (1 box) {#427m.1} [Description]
  • Alphabetical Card File of Foreign Purchasers of Locomotives, 1882-1907. (1 box) {#427m.2} [Description]
  • Alphabetical Card File of Purchasers of Locomotive Parts, [ca. 1900-1940] (2 boxes) {#427m.3} [Description]
  • Alphabetical Card File of Purchasers of Locomotives, [ca. 1900-1945]. (2 boxes) {#427m.4} [Description]
  • Alphabetical Parts Card File Relating to United States Government Standard Sheets (U.S.R.A.), undated. (1 box) {#427m.5}
  • Box and Drawer Listing for Tracings and Blueprints, Compiled by Richard B. Hain, [ca. 1976-1986]. (2 cartons) {#427m.6} [Description]
  • Brass Work Books, 1912-1941. (12 volumes) {#427m.7} [Description]
  • Car Index Card File, undated. (1 box) {#427m.8} [Description]
  • Card Directory, 1937-1955. (1 volume) {#427m.9} [Description]
  • Card Index to the Baldwin Locomotive Drawings (Fenerty Index), [ca. 1870-1941]. (30 boxes) {#427m.10} [Description]
  • Card Record Books, 1910-1912, 1914-1941. (11 volumes) {#427m.11} [Description]
  • Change Order Book of C.H. Wheeler Equipment, 1954-1962. (1 volume) {#427m.12} [Description]
  • Class Books, 1872-1950. (3 volumes) {#427m.13} [Description]
  • Construction Number Books, 1904-1956. (4 volumes) {#427m.14} [Description]
  • Contract Books, 1867-1931. (4 volumes) {#427m.15} [Description]
  • Counterbalance Books, 1933-1947. ( 3 volumes) {#427m.16} [Description]
  • Cross Reference Card File to the Fenerty Drawing Index, undated. (1 box) {#427m.17} [Description]
  • Cross Reference to the Card Index of the Baldwin Locomotive Drawings, [ca. 1870-1941. (2 boxes) {#427m.69} [Description]
  • Cylinder Record Card File, undated. (1 box) {#427m.18} [Description]
  • Detail Weights of Electric Engines, 1907-1921. (1 volume) {#427m.19}
  • Diesel Diagrams. (1 carton) {#427m.20}
  • Drawing Directories, [ca. 1941-1953]. (4 volumes) {#427m.21} [Description]
  • Driving Wheel Counterbalance Weight Card File, 1912-1939. (2 cartons) {#427m.22} [Description]
  • Electric Card Directories, 1906-1967. (3 volumes) {#427m.23} [Description]
  • Electric, Compressed Air and Gasoline Locomotive Order Books, 1907-1920. (5 volumes) {#427m.24} [Description]
  • Electric Locomotive Specification Books, 1904-1936. (11 volumes) {#427.m25} [Description]
  • Electric Truck Order Books, 1905-1914. (3 volumes) {#427m.26} [Description]
  • Electric Truck Specification Books, 1906-1924. (3 volumes) {#427m.27} [Description]
  • Engine and Material Record for Steam Locomotives and Tenders, Engine Class 2-8-0, 19S, Numbers 847-901 (U.S. Government War Department), [ca. 1944]. (1 volume) {#427m.28}
  • Engineering Publications (Operation and Maintenance Manuals, Inspection Sheets, Bills of Material, Parts List Indexes, etc.). 1907-1954. (404 boxes) {#427m.29} [Description]
  • Estimated Rough Weight of Connecting Rods File, undated. (1 box) {#427m.30} [Description]
  • Extra Order Books, 1944, 1947-1953. (49 volumes) {#427m.31} [Description]
  • Extra Order Index Card File, [ca, 1936-1954]. (2 boxes) {#427m.32} [Description]
  • Foreign Locomotive Order Books, 1919-1942. (3 volumes) {#427m.33} [Description]
  • General Indexes to Tracings, undated. (3 volumes) {#427m.34} [Description]
  • Job Index Card File, undated. (1 box) {#427m.35}
  • List of Tracings for Locomotives of the Pennsylvania Railroad Company, 1923. (2 volumes) {#427m.36} [Description]
  • Mechanical Engineering Drawings, [ca. late 19th c. to mid 20th c.] {#427m.37} [Description]
  • Miscellaneous Card File, undated. (1 box) {#427m.38} [Description]
  • Miscellaneous Reports, Correspondence, Manuals and Project Files, [ca. 1921-1962]. (10 cartons) {#427m.39} [Description]
  • Numerical Card File to Drawings, [undated]. (19 boxes) {#427m.40} [Description]
  • Numerical Card File to Sketches, undated. (1 box) {#427m.41} [Description]
  • Order Books for C.H. Wheeler Equipment, 1958-1962. (3 volumes) {#427m.42} [Description]
  • Pattern Directories, 1929-1963. (2 volumes) {#427m.43} [Description]
  • Pattern Number Card File, [ca. 1900s]. (1 box) {#427m.68} [Description]
  • Patterns (Tracings) for Drawbars, Driving Rods, Springs, Wheels, etc.), 1909-1931. (32 cartons) {#427m.44} [Description]
  • Photographs of Locomotives, [ca. 1909-1949]. (1 box) {#427m.45} [Description]
  • Record of Revisions to United States Government Standard Sheets, 1918. (2 boxes) {#427m.46} [Description]
  • Register of Engines Made by M.W. Baldwin; Baldwin, Vail and Hufty; Baldwin and Vail; Baldwin and Whitney; M.W. Baldwin and Company; Baldwin Locomotive Works; and M. Baird and Company, 1834-1871. (1 volume) {#427m.47} [Description]
  • Registers of Locomotives Constructed for the Years 1854-1907. (14 volumes) {#427m.48} [Description]
  • Repair Order Book for C.H. Wheeler Equipment, 1961-1962. (1 volume) {#427m.49} [Description]
  • Repair Parts Division Index Card File, [ca. 1944-1953]. (2 boxes) {#427m.50} [Description]
  • Sales Order Books, 1942-1950. (23 volumes) {#427m.51} [Description]
  • Sales Order Change Notice Books, 1952-1953. (2 volumes) {#427m.71} [Description]
  • Sales Order Lists, 1937-1948, 1950-1951 & undated. (1 volume) {#427m.70} [Description]
  • Special Counter Balance Book, 1917. (1 volume) {#427m.52}
  • Specifications from the Superheater Company, 1911-1930. (1 volume) {#427m.53}
  • Standard Practice Book, 1928-1947. (1 volume) {#427m.54} [Description]
  • Steam Locomotive Order Books, 1907-1936. (12 volumes) {#427m.55} [Description]
  • [Description]
  • Stub Brass Card File, [ca. 1900-1930s]. (1 box) {#427m.57}
  • Tender Work Books, 1924-1930. (2 volumes) {#427m.58} [Description]
  • Tracing Directory Number 6, 1939-1962. (1 volume) {#427m.59} [Description]
  • Tracing Number Card File, undated (1 card index box) {#427m.60} [Description]
  • U.S.R.A. Alphabetical Parts Card File, undated. (9 box) {#427m.61}
  • U.S.R.A. Sheet Number Card File, undated. (1 box) {#427m.62}
  • Weights of Connecting Rods for Class D and E locomotives, undated. (3 volumes) {#427m.63}
  • Weights of Electric Locomotives, [ca, 1896-1926]. (1 volume) {#427m.64}
  • Yearly Record of Locomotives Shipped, 1890-1948 (formerly Steam Locomotives Built for Export and Domestic Use (Commission Reports)). (2 boxes) {#427m.67} [Description]

Test Department, Eddystone, Pa.

  • Repair Report Index Card File, undated. (1 box) {#427m.65} [Description]

If you need further assistance, you may contact an archivist at ra-statearchives@pa.gov