Figure 81.—Model of General Motors diesel-electric locomotive, 1945.

PICTURE CREDITS

Figure [1].—Museum photo 25370 [2].—Museum photo 2720 [3].—Museum photo 23554 [4].—Museum photo 43102 [5].—Museum photo 43130 [6].—Museum photo 16534 [7].—Museum photo 43586-B [8].—Museum photo 16048 [9].—Museum photo 31975 [10].—Museum photo 43076-B [11].—Museum photo 43076 [12].—Museum photo 30571-A [13].—Museum photo 32367-E [14].—Museum Chaney photo 24478 [15].—Photo courtesy Baltimore and Ohio Railroad Co. [16].—Museum photo 43054-A [17].—Photo courtesy Baltimore and Ohio Railroad Co. [18].—Museum photo 13225-B [19].—Museum photo 43586 [20].—Photo courtesy Redwood Library [21].—Photo courtesy Southern Railway System [22].—Museum photo 43054 [23].—Museum photo 25012-B [24].—Museum photo 43076-A [25].—Museum photo 43060 [26]-[27].—Photos from Chaney collection [28].—Museum photo 31959-A [29].—Museum photo 14293 [30].—Museum photo 34328 [31].—Museum photo 29759-A [32].—Museum photo 16538 [33].—Museum Chaney photo 8810 [34].—Museum photo 21243-C [35].—Museum Chaney photo 13758 [36].—Photo courtesy Pennsylvania Railroad Co. [37].—Museum photo 23552 [38].—Museum Chaney photo 1429 [39].—Museum Chaney photo 1457 [40].—Museum Chaney photo 13528 [41].—Photo courtesy Baltimore and Ohio Railroad Co. [42].—Museum photo 32097-A [43]-[45].—Photos courtesy Baltimore and Ohio Railroad Co. [46]-[47].—Photos courtesy Chicago and North Western Railway System [48].—Museum Chaney photo 20295 [49].—Photo courtesy Baltimore and Ohio Railroad Co. [50].—Museum photo 43094 [51].—Museum photo 43182 [52].—Museum Chaney photo 13799 [53].—Museum photo 43083 [54].—Museum photo 30457 [55].—Museum Chaney photo 13538 [56].—Photo courtesy Reading Co. [57]-[58].—Photos courtesy University of Maine [59].—Photo courtesy Baltimore and Ohio Railroad Co. [60].—Museum Chaney photo 10314 [61].—Museum photo 26977-B [62].—Museum photo 30397 [63].—Museum photo 43299 [64].—Museum photo 26981-B [65].—Museum photo 26974-A [66].—Museum photo 26899-A [67].—Museum photo 43598 [68].—Museum photo 43299-E [69].—Museum photo 43297 [70].—Museum photo 26847-H [71].—Museum photo 43298 [72].—Museum photo 43298-A [73].—Museum photo 43298-B [74].—Museum photo 43299-A [75].—Museum photo 42272 [76].—Museum photo 43299-B [77].—Museum photo 43299-C [78].—Museum photo 43299-D [79].—Museum photo 43297-A [80].—Museum photo 43293 [81].—Museum photo 43297-B

ACKNOWLEDGMENTS

The author wishes to express his appreciation for the help given him by the many individuals, including railroad officials, librarians, and museum curators, who provided answers to many questions and confirmed many conjectures.

Special thanks are tendered A. B. Lawson and Lawrence W. Sagle of The Baltimore and Ohio Railroad Co., F. V. Koval of the Chicago and North Western Railway System, W. F. Kascal and Harry B. Spurrier of the New York Central System, H. T. Cover of the Pennsylvania Railroad Co., Harry E. Hammer of the Reading Co., K. C. Ingram of the Southern Pacific Co., Elizabeth O. Cullen of the Association of American Railroads, D. M. MacMaster of the Museum of Science and Industry at Chicago, H. D. Watson of the University of Maine, George M. Hart of George School in Bucks County, Pa., and Robert R. Brown of Lachine, Quebec—to name a few of those whose contributions have helped bring together the facts here presented.

It is fitting also at this time to refer to the late Charles B. Chaney, who collected over a period of almost 60 years an immense number of photographs, negatives, drawings, lithographs, and books dealing with railroading. Upon his death in 1948, he left this entire collection to the United States National Museum, of the Smithsonian Institution, confident that in the Museum it would be put to the widest possible use and would, therefore, carry forward his lifelong work of research in the history of locomotives and railroads.

His confidence was well founded. The Chaney collection of railroad material has been an invaluable source of information for the present work.

To acknowledge the contribution of Thomas Norrell of Silver Spring, Md., is likewise a pleasure. He graciously consented to read the manuscript of this work, and his authoritative comments have greatly enhanced its comprehensiveness and accuracy.