virtually every arpa director, and most arpa personnel at all levels, have encountered friendly and not-so-friendly "why arpa?" and " what is arpa?" questions throughout its history. this report seeks to explain some of the "whys" and "whats." | Barber Associates, Richard J.: The Advanced Research Projects Agency 1958-1974, report prepared for the Advanced Projects Research Agency under contract MDA 903-74-C-0096. Defense Technical Information Center, Springfield, Va., December 1975

be aware the pdf has more than 600 pages but its free (compared to these chaps who ask for money for something that is in the public domain), gives the whole picture what arpa was all about and is more readable than other scans.