The Untold History of ArpaNet.

Scanned maps of the network for twelve distinct periods from December 1969 to March 1977.

An atlas of maps and graphic representations of the geographies of ArpaNet.

Ian R. Hardy's thesis, published in 1996, examining the evolution of human communication on the ArpaNet.

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.

Brief, single page description of this aspect of Internet History.