Official web site for Phil Lapsley's book, 'Exploding The Phone: The Untold Story of the Teenagers and Outlaws Who Hacked Ma Bell'. documents that played a role in the development of phone phreaking. you can also search the bibliographic database of about 1,000 documents on phone phreaking history, many of which are available in full-text form.
My experience with document interchange led me to classify document formats using the essential distinction that some are "programmable" and some are not. [..]
The reason that this distinction is essential with respect to document interchange is that extracting information from documents in "programmable" document formats is equivalent to the halting problem. That is, it is arbitrarily difficult and cannot be automated in a general fashion.
For example, I conjecture that it is impossible to write a program that will extract the third word from a TeX document.