[COFF] ARPAnet now 4 nodes

[Lars Brinkhoff]

Rob Gingell wrote:
> 1: UCLA: Sigma-7
> 2: SRI: SDS-940
> 3: UCSB: IBM 360/75
> 4: Utah: PDP-10
[...]
> If you peruse the maps at the Computer History museum site you can see
> some real diversity in the systems. For instance in April 1971
> Burroughs had an IMP and a B6500 front-ending the under-construction
> ILLIAC-IV (later moved to Ames and front-ended by a couple of
> PDP-10s). PARC's MAXC appears in the mid-1970s.

Maybe this is a good time to ask if anyone knows whether any of those
diverse systems has software preserved?  Specifically, the
implementation of the NCP and 1822 Host-to-IMP protocols?