I have some pri­mary sources that can get estab­lish this link even closer than that. Unfor­tu­nately, prove­nance was all blown to bits by the researcher who was not a his­to­rian, just an avid enthu­si­ast who had no idea that any­thing beyond a notary seal (many of these illeg­i­ble) would be needed if you wanted to change his­tory. For now, you might look at the ros­ter of Mosby’s reg­i­ment. You will find enlisted one John B. Wilkes (Booth’s stage name, which he used as his most com­mon alias). You can see that his name was kept on the books, but never paid. He sup­plied them with infor­ma­tion but also, he owned (through his wife–yes, I know, the wife he offi­cially didn’t have, but John B. Wilkes did) in Harpers Ferry which was a way sta­tion on the courier route. Mosby’s “ter­ri­tory” extended that far, and they would pick up mail and also med­i­c­i­nals, which Booth was smug­gling South, through con­nec­tions he had made prior to the war, using a small band of friends and rel­a­tives, a lot of them the­ater peo­ple, to the extent that in many cases the Con­fed­er­acy was bet­ter sup­plied with cer­tain drugs than north­ern doc­tors were. If you would like to see some of these doc­u­ments, includ­ing inter­views with Mosby, let me know.