Reverend Aaron Burt Grosh (1803 – March 27, 1884), a Universalist minister, was one of the seven founders of the Grange. He had a major part in the design of the Grange ritual and was also responsible for the various songs used during various celebrations of the Grange. Grosh accepted a position in the Department of Agriculture soon after its establishment, where he served as the first Department Librarian from 1867 until 1869. He penned a volume for members of the Grange to enable them a better understanding of the organization and its teachings. He also authored the Odd Fellows Improved Manual for the same purpose.