Probably should note your source lest someone accuse you of plagerism.
Authors of Evolution of Mormon Temple Ceremony, Jerald and Sandra Tanner.
Originally founded as Modern Microfilm Co. by Jerald and Sandra Tanner, the company was reorganized as a non-profit organization on January 1, 1983, and the name was changed to Utah Lighthouse™ Ministry.
Jerald and Sandra Tanner were raised in the LDS faith, both with a strong Mormon family history. Jerald is the great-great-grandson of John Tanner, well known for his sizeable financial contributions to Joseph Smith and the LDS church in 1835 when the church was deeply in debt. Sandra Tanner is a great-great-granddaughter of Brigham Young, the second president of the Mormon Church.
Jerald is now deceased.
I met Sandra Tannar during this past year and she has been a great inspiration of me and other former Mormons.