1979. Marc Ellington and Todd Siler, Towie Barclay Castle, Aberdeenshire, Scotland. Edinburgh Arts 1979.
1979. L-R: Todd Siler, Wieslaw Borowski, Chris Carrell. Kilmartin Glen, Scotland. Edinburgh Arts 1979.
1979. Demarco and Edinburgh Arts group at Baluachraig cup-and-ring marked stone, Kilmartin Glen, Scotland. Edinburgh Arts 1979.
1979. Todd Siler, Wieslaw Borowski and Chris Carrell. Baluachraig inscribed stone. Kilmartin, Argyll. Edinburgh Arts 1979.