General Baker, in a report upon the subject which he made to Edwin M. Stanton, the Secretary of War, enclosing this commission, said: “This document, undoubtedly authentic and bearing the genuine signature and private seal of General J. E. B. Stuart, is of itself strong evidence of the appreciation of which ‘F’s’ treasonable services as a spy and informer were held by her Rebel employers. The proof of ‘F’s’ former employment in the service may be considered indisputable; that of her more recent services and especially in connection with the late attack upon our outpost at Fairfax Court House is not less conclusive; that proof consists in the voluntary acknowledgment and declaration by ‘F’ that she made herself acquainted while a resident within our lines at Fairfax Court House of all the particulars relating to the numbers of our forces there and in the neighborhood, the location of our camps, the places where officers’ quarters were established, the precise points where our pickets were stationed, the strength of the outposts, the names of officers in command, the nature of general orders and all other information valuable to the Rebel leaders; that such information had been communicated by her to Captain Mosby of the Confederate Army immediately before the attack on our outposts above mentioned; and that it has been in consequence of the precision and correctness of such information that Captain Mosby had been enabled successfully to attack and surprise the pickets and outposts of our forces, to find without delay or difficulty the quarters of General Stoughton and other United States officers, to capture that officer and a large amount of Government property and effect a large return within the Confederate lines. “‘F’ also stated to my informant that Captain Mosby had, but a short time before the rebel raid at Fairfax, been a guest at ‘F’s’ house at that place, that he had remained there three days and three nights, disguised in citizen’s dress and that during such visit she had given to him all the information and details which afterward enabled him successfully to attack our forces. ‘F’ also stated that on an occasion while she was taking a ride on horseback, accompanied by a member of General Stoughton’s staff, they were met by Captain Mosby, also on horseback, but in citizen’s dress and that she and Captain Mosby recognized and saluted each other.”