Mormonism Pt. 1

Episode 9: The Nature of the Church and Church Structure does affirm that there are multiple first vision accounts

First Vision Accounts

From on how the BoM was translated

A Seer Stone and a Hat – "Translating" the Book of Mormon

The Church confirming the use of the Seer Stone

Joseph Smith Papers: Seer Stone

List of Presidents

What Latter-day Saints Do in Each Room of Their Temples (With Pictures and Descriptions)