https://en.wikipedia.org/wiki/Kate_Warne

and this is the first I've heard of this and on the face of it...I consider it BS.


From the questionable source...wiki.

The secessionist plot to kill Lincoln was:
just as Mr. Lincoln would be passing through the narrow vestibule of the Depot at Calvert St. Station, to enter his carriage. A row or fight was to be got up by some outsiders to quell which the few policemen at the Depot would rush out, thus leaving Mr. Lincoln entirely unprotected and at the mercy of a mob of Secessionists who were to surround him at that time. A small Steamer had been chartered and was lying in one of the Bays or little streams running into the Chesapeake Bay, to which the murderers were to flee and it was immediately to put off for Virginia.[11]
After seeing the pieces of the plot coming together, Pinkerton directed Kate Warne on to take the 5:10 evening train to New York City on the morning of February 18. Once there, she was to set up a meeting with Norman B. Judd and give him a letter from Pinkerton outlining the known details of the assassination attempt. After receiving the details of the Baltimore Plot from Warne, Judd set up a meeting between himself, Pinkerton, and Lincoln on February 21.[12] At this meeting, Lincoln was doubtful of the existence of an assassination plot or that if such a plot existed that it should be taken seriously.
However, a second independent source confirmed the plot by way of Frederick W. Seward, son of William H. Seward (the secretary of state–designate).[4] From this point, Lincoln agreed that the assassination plot was plausible enough to take action. Lincoln decided to avoid hazard where it was not necessary; however, he refused to cancel any of his scheduled plans in Harrisburg. His agenda included: giving three speeches, raising of the American flag at Independence Hall, and attending a high-profile dinner.[13]
Train arrangements were made accordingly that allowed Lincoln to fulfill his scheduled duties in Harrisburg. It was not until 5:45 at night that there was any deviation from his schedule. John George Nicolay, Lincoln's private secretary, interrupted the dinner party to excuse the president-elect. Lincoln then changed into a traveling suit and a soft felt cap. He carried a shawl upon one arm to play the role of an invalid.[14] Pinkerton, meanwhile, had the telegraph lines interrupted to prevent any knowledge of the deviation in Lincoln's schedule. At the station, Warne entered the sleeping car through the rear along with Pinkerton, Ward Hill Lamon, and a still-disguised Lincoln. She greeted Lincoln loudly as she would have a true brother.[citation needed]
From Harrisburg, Abraham Lincoln rode to Philadelphia by a special Pennsylvania Railroad train. From Philadelphia he went to Baltimore by a special Philadelphia, Wilmington, and Baltimore train on the night of February 22–23.[15] It is said that Kate Warne did not sleep a wink on the overnight trip from Pennsylvania to Washington D.C. The disguises provided by Warne that night enabled Lincoln to make it through Baltimore without recognition and take his seat in the White House. It is believed that Pinkerton came up with the slogan to his agency "we never sleep" as a result of Warne's guard of Lincoln that night. Warne was key in the foiled Baltimore assassination plot – not only did she help uncover its details, but she also carried out most of the arrangements to smuggle Lincoln into Washington, D.C. She couriered secret information and set up meetings as well as securing the necessary four berths on a train leaving Philadelphia under the pretext that these berths were for her sick brother and family members.[11] The train pulled out shortly before 11 p.m. and arrived in Baltimore about 3:30 a.m. on February 23. Warne remained in Baltimore as the sleeping cars with Lincoln on board were shifted to another train, which arrived in Washington around 6 a.m.[16]
Civil War: Intelligence work for the Union, 1861–1865[edit]


During the American Civil War Kate Warne traveled with her boss, Allan Pinkerton, to meet with General George B. McClellan's Ohio Division. This photo shows Pinkerton and President Lincoln at the Battle of Antietam in 1862.

During the American Civil War, Allan Pinkerton and Kate Warne were used as a covert war intelligence-gathering bureau. Warne could easily penetrate into Southern social gatherings. She said that women are most useful in worming out secrets in many places which would be impossible for a male detective. Believed to be a mistress of Pinkerton, Warne would often pose as his wife while undercover. She also had an assortment of alias names: Kay Warne, Kay Waren, Kay Warren, Kate Warne, Kate Waren, Kate Warren, Kitty Warne, Kitty Waren, Kitty Warren, Kittie Waren, Kittie Warne, and Kittie Warren. Warne was known as "Kitty" to Robert Pinkerton, Allan's brother. Robert Pinkerton often argued with Warne over expenses turned over to the agency, but her relationship with Allan continued for years.[citation ne