- At Dinner
- At the National Sporting Club
- At the Pavilion
- At the Savoy
- At the top of the swing
- Attack on Brookfield.
- Auchmeromyia luteola
- Australian
- Baghdad
- Bailey's American Mowing Machine (1822)
- Balancing
- Balancing 2
- Balancing —XIV. Century
- Balancing.—XIV. Century
- Balancing—XIV. Century
- Balloon-Ball.—XIV. Century
- Bandy-Ball.—XIV. Century
- Baseball pitches
- Basque Cart
- Battle of Lake George
- Battle of Muddy Brook
- Beak of hemipteron
- Bear and Monkey
- Beaver Trap
- Bell's Reaping-Machine (1826)
- Bernard Palissy
- Besnier's flying apparatus
- Between Times, Leicester Square
- Binding and pulling grain in the Egypt of the pharaohs
- Birch-Bark Canoe
- Birch-Bark Cradle from Yukon River, Alaska
- Birthplace of Newton
- Blackfeet Cradle, Made of Lattice-work and Leather
- Blackfoot Moccasin
- Blackfoot Squaw Traveling
- Blaise Pascal
- Blanket - Chilcat Indians, Alaska
- Boat Tilting
- Boating
- Boats made from Shoes, Holland
- Bob-Cherry
- Bobcat
- Bomb-releasing mechanism
- Botocudo Indian with Lip-plug
- Bowling.—XIII. Century
- Bowling.—XIV. Century
- Bowling.—XIV. Century 2
- Boxing
- Boy
- Boy and Butterfly.—XIV. Century
- Boy and girl feeding a pony an apple
- Boy and girl in affectionate hug
- Boy walking in the countryside
- Boys Tilting in Pastime
- Boys’ Festival, Japan
- Braddock's Defeat
- Bradford's Velocipede
- Buckler-Play.—XIV. Century
- Buffalo Cart
- Bull and Mouth Road