2nd Edition, Volumes 55-57
			
			
Volume 56 (cont.)
- Arthur Eddington
- Neils Bohr
- Atomic Theory and the Description of Nature (Selections)
- Discussion with Einstein on Epistemology
 
- G.H. Hardy
- A Mathematician's Apology
 
- Werner Heisenberg
- Erwin Schrödinger
- Theodosius Dobzhansky
- Genetics and the Origin of Species
 
- C.H. Waddington
Volume 57
- Thorstein Veblen
- The Theory of the Leisure Class
 
- R.H. Tawney
- John Maynard Keynes
- The General Theory of Employment, Interest and Money