ArpaNet History  
   The Untold History of ArpaNet.
   http://www.dei.isep.ipp.pt/docs/arpa.html

ArpaNet Maps  
   Scanned maps of the network for twelve distinct periods from December 1969 to March 1977.
   http://som.csudh.edu/cis/lpress/history/arpamaps/

ArpaNet Map - Part of An Atlas of Cyberspaces  
   An atlas of maps and graphic representations of the geographies of ArpaNet.
   http://www.cybergeography.org/atlas/historical.html

The Evolution of ArpaNet Email  
   Ian R. Hardy's thesis, published in 1996, examining the evolution of human communication on the ArpaNet.
   http://www.ifla.org/documents/internet/hari1.txt

Publications on "Distributed Communications"-series  
   Documents from Paul Baran from RAND Corporation, number of memoranda propsing a digital communications network for military us that could still function after sustaining heavy damage from an enemy attack.
   http://www.rand.org/publications/RM/baran.list.html

The ARPAnet  
   Brief, single page description of this aspect of Internet History.
   http://www.orangepeel.com/newOP/en/internet/shortHistory.php?arpanet