Anyone familiar with the story of the Book of Mormon will know the phrase, “plates of brass.” These plates are one of many sets of plates that we read of in the book. We encounter them early on, in I Nephi 3.3:
For behold, Laban hath the record of the Jews and also a genealogy of thy forefathers, and they are engraven upon plates of brass.
I came upon one possible inspiration for this idea last night as I read I Kings in the King James Version. In the section describing the building of Solomon’s Temple, I read:
And every base had four brazen wheels, and plates of brass…and also upon the mouth of it were gratings with their borders…For on the plates of the ledges thereof, and on the borders thereof, he graved cherubims, lions, and palm trees…
[I Kings 7]
Now the plates mentioned in Kings are of a very different nature than those in the BOM, but the phraseology is the same, and could easily be the kernel of an idea: the Jews worked in brass, brass would endure unlike scrolls and could preserve an ancient record. Also, the well-known interest of Masons in Hiram of Tyre and Joseph Smith’s interest in temples suggest that he would know this passage of Scripture with some familiarity.