Thanks to a partnership with FamilySearch, the Utah State Archives has made available online the tax assessment roll books for Salt Lake City from 1856 to 1878. Additional books from 1879 to 1892, after which this function moved to county offices, will be added later. These volumes record the assessment of real and personal property Salt Lake City, Utah Territory. They were used for taxing purposes. Individual city assessors assessed and collected property taxes within municipal boundaries, often recording the details such as the number of horses owned.
A name index was previously compiled and published by Ronald Vern Jackson, a digitized copy is available from the Family History Library. However it only covers from 1854 to 1861 (volumes earlier than 1856 are not currently in the custody of the Utah State Archives). If you are interested in volunteering to help complete an index this collection, please contact Gina Strack.