- Machairodus, the Sabre-toothed Tiger
- Magdaleneian Carved Ivory Harpoon-thrower
- Magdaleneian Carved Ivory Harpoon-thrower
- Magdalenian Carved Ivory Dagger
- Magdalenian Carved Ivory Dagger
- Magdalenian Cave Painting
- Magdalenian Cave Painting
- Magdalenian Painting
- Magdalenian Painting
- Making Fire
- Making Fire
- Making Fire 2
- Making Fire 2
- Making Grass Rope
- Making Grass Rope
- Making of bone needles
- Making of bone needles
- Mammoth
- Mammoth Hunt
- Map of Europe 50,000 Years Ago
- Miocene Mammals
- molars of elephants
- Morphology and principal parts of trilobites
- Mousterian Spear-head
- Mousterian Spear-head
- Mousterians on the march
- Mousterians on the march
- Myotragus
- Nature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern Bird
- Nautilus
- Neanderthal Man
- Neanderthaler or Mousterian
- Neanderthaler or Mousterian
- Neolithic Implements
- Neolithic or New Stone Age Man
- Ornithischian dinosaurs - Paleoscincus
- Ornithischian dinosaurs - Stegosaurus
- Ornithischian dinosaurs - Trachodon
- Ornithischian dinosaurs - Triceratops
- Outline Restorations of Dinosaurs
- Outline sketch restoration of Triceratops
- Oval Implement
- Palæolithic Men Attacking Cave Bear
- Palæomastodon
- Pariasaurus - An Extinct Vegetarian Triassic Reptile
- Pelycosaur
- Perforated Wolfès Fang, from Ivinghoe Beacon
- Peripatus novæ zealandiæ
- Phororhacos, a Patagonian Giant of the Miocene
- Phytosaur - Crocodile like reptile
- Piltdown Man making Flint Implement
- Pithecanthropos Erectus
- Pithecanthropus, the Sub-man of Java
- Poise of the Mousterian Man
- Pottery from Lake Dwellings
- Prehistoric carving
- Prehistoric carving of the Mammoth
- Prehistoric Men Attacking the Great Cave Bears
- Prehistoric Whistle
- Primitive Amphibian