- The Pope-Hartford
- The Pope-Robinson
- The Present Aspect of Constantinople
- The Press used in making Federal presses steel frame
- The primary Planets never eclipse one another
- The Prison Ship 'Jersey'
- The Ptolemaic idea of the Universe
- The Rambler Runabout
- The Red Jacket
- The Rigging of a Three-masted Ship
- The Rocket 1830
- The Roe Triplane
- The Sails of a Four-masted Ship
- The Santa Maria, the Niña and the Pinta
- The Savannah
- The Screw of Archimedes
- The seaplane shoots off the catapult
- The seven-cylinder 50-h.p. Gnome motor.
- The Shallop
- The single-seated 'air-car'—a suggested type
- The Situation of the Cavalry man on the near side
- The Snow. an obsolete type
- The Solar System
- The Solar System, or the orbits of the planets
- The Spray
- The Stage coach
- The Stage Coach - Old Times
- The Steamship Oceanic
- The Stearns
- The superstitious notions of the antients with regard to Eclipses
- The Tillamook Rock Light Station
- The Train Ferry
- The Treachourous Kayak
- The tunnels
- The universe
- The Vickers
- The Voisin Biplane
- The Voisin Biplane - top view
- The Walter Car
- The water tank
- The Whaleback
- The Winton
- The Wolverine
- The Wright Biplane
- The Wright Brothers Aero Engine
- The Wright Brothers experimental glider
- The Wright Wing-warp
- They swoop down over the trenches
- The Erard grand action modified by Herz
- Thirteenth-century hospital interior
- Thomas 'Flyer'
- Tooting the sirens of warning
- Travelling Position
- Travelling Post, 1825-35
- Travelling Posting Carriage (1), 1750
- Travelling Posting Carriage (2), 1750
- Travelling workshop for the repair of military aeroplanes
- trebuchet
- Trepied
- Tudor Knox