This is the head of the BASIC listing: 0 REM --ATOM 20 1 REM --VERSION: 7/1/77 3 REM --AUTHOR: RAY BRANDER 4 REM -- TWO HARBORS 5 REM --CDC CYBER 7

This is the head of the BASIC listing: 0 REM --ATOM 20 1 REM --VERSION: 7/1/77 3 REM --AUTHOR: RAY BRANDER 4 REM -- TWO HARBORS 5 REM --CDC CYBER 70/73-26 BASIC 3.1 The CDC Cyber 70 was an early 1970s mainframe: http://en.wikipedia.org/wiki/CDC_Cyber#Cyber_70_and_170_series http://en.wikipedia.org/wiki/CDC_Cyber#Cyber_70_and_170_seri... Note that it was developed in Two Harbors, Minnesota.