June 23, 1861
- Confederates under Col. Thomas J. Jackson begin a systematic destruction of the B&O Railroad at Martinsburg, including burning 42 locomotives and numerous cars. (Baltimore American, Stover—Johnston says 6/20–21 56 locos and 386 cars—that was the total haul including those taken south)1
- Baer, Christopher, A General Chronology of the Pennsylvania Railroad Company, its Predecessors and Successors and its Historical Context (1861), The Pennsylvania Railroad Technical & Historical Society, 2015 (accessed 5/29/2021)