Working in The Church of Jesus Christ of Latter-day Saints' Church History Library, April Williamsen came across some printer's plates from 1842. This set of plates was made for the facsimiles of Egyptian papyri that inspired the church's Book of Abraham. Joseph Smith himself actually oversaw the production of these printer's plates.
"He touched those, he held them, he was so involved in that," Williamsen said. "Just to think that Joseph Smith had a part in this, and they're here today, it brings 150 years right up to the present."