The Met bulletin lists acquisition of the JS Papyri in 1947.
“Review of the Year 1947,” Metropolitan Museum of Art Bulletin 7, no. 1 (1948): 17.
The major accession of the DEPARTMENT OF EGYPTIAN ART was the purchase early in the year of an almost life-sized limestone statuette of a kneeling captive of the VI Dynasty. . . . Other purchases included . . . papyrus fragments of hieratic Books of the Dead, once the property of the Mormon leader Joseph Smith.