Selwyn Dewdney piecing together traced drawings of petroglyphs at Writing-on-Stone, Alberta.
Selwyn Dewdney measuring petroglyphs and sketching to scale at Writing-on-Stone, Alberta.
Selwyn Dewdney checking final tracings of petroglyphs with originals at Writing-on-Stone, Alberta.
Selwyn Dewdney checking tracing with original petroglyphs at Writing-on-Stone, Alberta.
Selwyn Dewdney applying rice paper over petroglyph before tracing with a pencil, Writing-on-Stone, Alberta.
Selwyn Dewdney applying water to surface with petroglyph at Writing-on-Stone, Alberta.
Selwyn Dewdney studying petroglyphs at Writing-on-Stone, Alberta.
Tracings of rock art sites, Alberta.
Tracings of pictographs at the Leslie and Police Creek sites on the Milk River, Alberta.
Tracings of pictographs at the Verdigris site on the Milk River, Alberta.