Interesting. Where can I read more about "that little-known but quite
spectacular revelation came to the entire First Presidency"?
Truman O. Angell is the source for the vision of the Kirtland Temple design.
Paul L. Anderson, “Truman O. Angell” in Supporting Saints: Life
Stories of Nineteenth-Century Mormons (Religious Studies Center, BYU, 1985),
133–73. http://goo.gl/0WoCzF"Angell also reported an
interview that took place between a carpenter named Rolph and Frederick G.
Williams, one of the counselors to President Smith. The carpenter asked
President Williams what he thought of the building. Frederick G. Williams
answered, “It looks to me like the pattern precisely” and then
related a vision he had shared with the other members of the Presidency:"Joseph received word of the Lord for him to take his two
counsellors Williams and Rigdon and come before the Lord, and He would show them
the plan or model of the House to be built. We went upon our knees, called on
the Lord, and the Building appeared within viewing distance: I being the first
to discover it. Then all of us viewed it together. After we had taken a good
look at the exterior, the building seemed to come right over us, and the Makeup
of this Hall seemed to coincide with what I there saw to a minutia."