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Subject
- Illustrated works26
- Postcards26
- Aeronautics24
- Ballooning15
- Airships11
- Hot air balloons9
- Military airships7
- Flight5
- Airplanes4
- Chemical engineering3
- Othmer, Donald F. (Donald Frederick), 1904-19953
- Aeronautics, Military1
- Astronomers1
- Astronomy1
- Baldwin, Thomas S. (Thomas Scott), 1854-19231
- Ballooning--Accidents1
- Biplanes1
- Blanchard, Jean-Pierre, 1753-18091
- Blériot aircraft1
- Blériot, Louis, 1872-19361