PDF: 1969 Croom Open Source Agency
Original Online Source (GWU.EDU/~NSARCHIV)
Phi Beta Iota: We are indebted to Dr. Hamilton Bean, who discovered this document in the course of doing research for his superb book, the first authentic book on open source intelligence in the context of a secret world that would rather be blind, deaf, and dumb, as long as it could do so as expensively as possible, and of course with impunity.
Review (Guest): No More Secrets – Open Source Information and the Reshaping of U.S. Intelligence
Review: No More Secrets – Open Source Information and the Reshaping of U.S. Intelligence
Review: Open Source Intelligence in a Networked World