As was mentioned in the last column (click here to read it), it was almost universally assumed that all of the papyri Joseph Smith had once owned had been destroyed in the Great Chicago Fire of 1871. Thus many were surprised when the papyri surfaced in 1967. One of the papyri fragments contained the drawing which was the original source of Facsimile One. This papyrus drew the most immediate interest.
Further reading: https://ldsmag.com/article-1-14720/