Minutes of meeting indicate B. H. Roberts used sacrament prayers in Moroni and David Whitmer as evidence of the Book of Mormon.
B. H. Roberts, Talk, Minutes from Stake Conference Talk, Alpine Stake, January 11, 1931, rep. "B. H. Roberts, His Final Decade: Statements About the Book of Mormon (1924-33)," FARMS Preliminary Report (1985)
JANUARY 11, 1931 – ALPINE STAKE
First session subject: Marks of good Church members. He spoke of the sacrament of the Lord’s Supper and analyzed the sacramental prayers.
Second session subject: Continued the subject of marks of good Church members—tithing, secret prayer, missionary work, temple work. ("We will have some day a thousand temples.")
Third session subject: "Spoke on his visit to David Whitmer and David Whitmer’s testimony of the truthfulness of the Book of Mormon."