Historic Scotland

National Museums Scotland

SNH – Scottish Natural Heritage

Ease Archaeology

Orkney Islands Council

Tankerness House Museum, Kirkwall (Does not appear to have a web site but a little information appears on the OIC site)

Stromness Museum  (Does not appear to have a web site but a little informationcan be found by clicking the link)

Pennsylvania State University

VisitScotland

VisitOrkney

Westray and Papa Westray Tourist Association

Westray Development Trust