The Arpanet IMP Program: Retrospective and Resurrection

This article first sketches the history of the Arpanet IMP program, originally developed in 1969, and enumerates a sequence of other systems evolving from the original program over 30 years. The article then describes the redigitization and reassembly in 2013 of the program from a 1973 line printer listing, after which the program was run once again on an emulation of the 1969 computer hardware.