Tucker proved that he was a lazy researcher who jumped to conclusions (wrong ones) rather than finish his research.
Jackson captured the Virginia section of the B&O RR in June 1861. Part of his haul was 70 locomotives and some 300 cars. Richmond later sent QM Agent Thomas R. Sharp (later Capt., QM, CSA) to haul some of this rolling stock south, over country roads, pulled by teams of up to 40 horses, to put them on the Manassas Gap RR for Confederate use. Because of people like Tucker, I wrote the book (Locomotives Up the Turnpike, available from me for $25, post paid).
I quote from my book:
"Spencer Tucker's 2003 Brigadier General James D. Imboden: Confederate Commander in the Shenandoah attacks the story head-on, attempting to debunk the story by pointing out that everything we know about the incident comes from a mention by Imboden in an article he wrote for the Century Magazine. Readers will find Imboden's description of the story in the book published from the Century articles–Battles & Leaders of the Civil War, Volume I, p. 122. Tucker boldly states that there is very little evidence that the event ever happened. He claims that there are no official documents from either the Union or the Confederate side that refer to the event. Further, the records of the Baltimore & Ohio Railroad do not indicate such happened and not a single newspaper in the South reported this important Southern "victory." He claimed that it was not mentioned in any diaries, memories or letters surviving from the period: It is difficult to see what motive Imboden might have had for conjuring up this story … but there is simply no proof of the event having transpired."
On my web site are transcriptions of 523 of those documents that provide the proof that Tucker says does not exist. These are 13 OR documents, 378 documents from the National Archives, 6 from diaries of people who saw or participated in the Haul, 49 from Confederate newspapers, 40 from Union newspapers, 9 from B&O documents (including their annual reports), 7 from Tredegar records, 1 each from the Richmond, Fredericksburg & Potomac RR, Virginia Central RR, the Confederate Railroad Bureau archives, an entry in Dabney's bio of Jackson (c 1864), an entry in Joe Johnston's memoirs, and 18 other sources -- all but 7 were published/created during the war.
I would not trust anything that Tucker wrote.