Citation #15 and #16

The following 1983 Ensign article does a great job of reviewing the adjustments made to the editions of the Book of Mormon over the years.

https://www.lds.org/ensign/1983/12/understanding-textual-changes-in-the-book-of-mormon?lang=eng

A more in-depth presentation can be found at FAIR Mormon:

https://www.fairmormon.org/answers/Book_of_Mormon/Textual_changes