Black and white lantern slide of petroglyphs found in Parral, Mexico.

Black and white lantern slide of petroglyphs found in Parral, Mexico.

Black and white lantern slide of dot patterned petroglyphs.

Black and white lantern slide of petroglyphs found north of Zape, Mexico.

Black and white lantern slide copy of a sketch of petroglyphs on Table Rock, as traced in 1850, from an unknown source.