Hi Vince, this should clear it up; "Jack Martin also told bail bondsman Hardy Davis that he had heard on television that Ferrie's New Orleans library card had been found in Oswald's possession when he was arrested in Dallas. Davis reported this to Ferrie's employer, the lawyer G. Wray Gill. (In fact, no such library card was found among Oswald's possessions.) Ferrie subsequently visited both Oswald's former New Orleans landlady and a former neighbour about this report. Ferrie was able to produce his library card for FBI agents who interviewed him on November 27, 1963."
Ah, thank you. This is what I suspected.
Surely conspiracy theorists wouldn't make nonsense up solely to support their illogical accounts and to sell books, would they?