Opera Hotel register (1887-1901, 1941) includes names, addresses (generally limited to city if any), date/time, rooms rented, and a notes field. Since many of the guests were in the entertainment industry, many entries include creatively devised advertisements for the performances or other additional information on the group and type of entertainment provided. A note, dated 1941, appears to have been added by a later owner of the register. According to the River Falls Journal, the register was in the possession of W. A. Freeman when the fire that burned the building formerly housing the Opera Hotel, burned in 1921.