Unknown: Ken creates `Space Travel'. It was first written on Multics, then transliterated into Fortran for GECOS, then Ken and Dennis rewrote Space Travel to run on the PDP-7 [http://cm.bell-labs.com/cm/cs/who/dmr/hist.html]

Mid-year: Bell Labs finally withdraws from the Multics project. Dennis says: “It was pretty obvious many months in advance that the support was likely to go away, and the machine stayed around for months after.” [QCU pg 8]

April, May, June: Ken is interested in writing a file system. Dennis says: “The interest was older than this. He did experiments with simulation of paging on Multics, for example. He also wrote a rudimentary, completely stand-alone system for the Multics machine that achieved the equivalent of “Hello World” but gave it up when it became obvious that the hardware would not last.” [QCU pg 8]

Mid-year: Ken brings the file system to life on the PDP-7 in a month [QCU pg 10]

Unknown: Ken develops the B language. Dennis says: “By the time B was developed, PDP-7 Unix was a 2-user system that already did a basic core of ancestral commands and was self-supporting (development done on itself). So during the next months, extending into 1970, a useful programming environment visibly ancestral to current Unix was developed. B was just a part of this.” [QCU pg 34], [http://cm.bell-labs.com/cm/cs/who/dmr/chist.html]