Updated through online information from Jim Lewis.
According to the Deseret Evening News, January 11, 1907, this instrument was built by W.W. Kimball. It cost $6500 and contained 1800 speaking pipes. The Vox Humana was "sweet and delicate."
This entry describes an original installation of a new pipe organ. Identified by William Dunklin, using information found in a vintage postcard.
A postcard circa 1915 shows a pipe organ center front. A simple, 8' display of non-polychromed pipes stands on an impost barely above the top row of choir chair backs. The Weber Stake Tabernacle was replaced by a new tabernacle in 1956 and the building torn down in 1971. Fate of the organ is unknown.