Foster W. Jones says Henry Tressler saw "rolls of papyrus" that BOA was translated from.
Foster W. Jones, "The Work in Indiana," Deseret Weekly 55, no. 7 (July 31, 1897): 209
We had a most successful trip, during which time we met Mr. Henry Tressler, of Brownstown, Johnson county, Indiana, one of the guards who had charge of the Prophet Joseph Smith, at Far West, Caldwell county, Mo., from which place he was taken to Liberty, Clay county, Mo. . . . He [Henry Tressler] also saw the rolls of Papyrus from which the Pearl of Great Price was translated, and procured a piece of the bandage that was wrapped around one of the mummies exhibited by Mr. Chandler.