Black and white lantern slide of a sketch of the Stag-horn Baton Paleolithic carvings from El Pendo Cave, Santander.

Black and white lantern slide of Paleolithic cave pantings of bison and horse heads from Bedeilhac Cave.

Black and white lantern slide of a sketch diagram of a bone implement, Elephas antiquus, found at Piltdown, England.

Black and white lantern slide of a sketch diagram of a chipped flint hand axe, 16' level, Foxhall Hall pit, Ipswich, Suffolk.

Black and white lantern slide of Paleolithic carvings of a cricket and cats on an ivory plaque from Trois Freres Cave.

Black and white lantern slide of a Paleolithic drawing of a crumpled bison from Altamira.

Black and white lantern slide of a Paleolithic drawing of a crumpled bison from Altamira.

Black and white lantern slide of a Paleolithic drawing of a crumpled bison from Altamira.

Black and white lantern slide of a hand-drawn sketch diagram of canal lock systems.

Black and white lantern slide of Paleolithic drawings of bison from Niaux cavern.

Black and white lantern slide of a Paleolithic engraving of a bison from La Greze cave.

Black and white lantern slide of a Paleolithic drawing of a female bison from Altamira.