Nels Madsen interviews Emma Smith on whether or not Joseph could have translated the BOM.
Nels Madsen, "Visit to Mrs. Emma Smith Bidemon [sic]," interview by Nels Madsen, 1877, 1-2, Historian's Office, 1931, MS 852, Church History Library
Q. Did he receive the plates from which he claimed to have translated the Book of Mormon? A. Yes, They lay in a box under our bed for months but I never felt at liberty to look at them.
In regard to the Book of Mormon Mrs. Bidemon stated emphatically that he[r] husband, Joseph Smith could not have written such a book without inspiration. He had not read the Bible enough to know that there were walls around Jerusalem and he came and asked me if there were walls around the city of Jerusalem.