p. 48 & 49 Letter and sheet of information dated April 4, 1944 from Allen G. Geertz (fuel engineer) to C.F.H. Allen re information about specific engines, dated April 4, 1944

p. 48 & 49 Letter and sheet of information dated April 4, 1944 from Allen G. Geertz (fuel engineer) to C.F.H. Allen re information about specific engines, dated April 4, 1944, Box: 1, Volume: 3. Pittsburg, Shawmut & Northern Railroad Company papers, 2161. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/357881 Accessed January 10, 2026.