Allen D. Roberts offers summary of use of Masonic symbols in Church iconography.
Allen D. Roberts, "Where Are the All-Seeing Eyes?: The Origin, Use and Decline of Early Mormon Symbolism," Sunstone (May 1985): 38
It is true that the artwork, particularly in the literature of the two groups, is sometimes indistinguishable. Masonic handbooks clearly show that the three most important Masonic symbols (three great lights) are the Bible, square, and compass. All of these have place in the Mormon symbolic vocabulary as well . . .