RCAHMS: Exploring Scotland's Heritage - Orkney, 1996
Some 89 detailed site descriptions from this publication were entered into Canmore in 2017. The book was a collaboration between the author Dr. Anna Ritchie and RCAHMS staff, and aimed to provide a thorough introduction to a wide range of monuments dating from prehistoric to recent times in Orkney.
Information from HES Survey and Recording (GFG) 22 June 2018