voice from the past

[David Honig]

On Secrecy of Secrecy
	
Without the freedom to expose the system proposal to widespread scrutiny'
by clever minds of diverse interests, is to increase the risk that
significant points of potential weakness have been overlooked. A frank and
open discussion here is to our advantage.

http://www.rand.org/publications/RM/RM3765/RM3765.chapter2.html

Chapter 3 has an excellent picture of a binary key on a hollerith card...
http://www.rand.org/publications/RM/RM3765/RM3765.chapter3.html