Jesse Smith refers to Joseph's spectacles and deciphering of hieroglyphics.
Jesse Smith to Hyrum Smith, June 17, 1829, in “Letterbook 2,” 60–61, The Joseph Smith Papers website, accessed August 11, 2021
You state your Father cannot write by reason of a nervous affection this is a poor excuse, worse than none, he can dictate to others and they can write, he can If he knows not what to write, he can get your Brother’s spectacles he would then be as able to write dictate a letter, as Joe is to decypher hieroglyphics, if more should be wanting he can employ the same scoundrel of a scribe, and then not only the matter but manner and style would be correct.