I always thought there was one and only one PDP-6 at MIT. The one running ITS at the AI Lab. But then I found a post to alt.sys.pdp10 by Marc Crispin:
> I did meet the MIT AI and DM PDP-6s Digging further, I found Project MAC progress reports mentioning this Dynamic Modeling PDP-6. Page 59 in http://www.dtic.mil/dtic/tr/fulltext/u2/732767.pdf > at Project MAC, both the Multics GE 645 system and the Dynamic > Modeling and Computer Graphics Groups' PDP-6/10 system are network > hosts. Page 60 in http://www.dtic.mil/dtic/tr/fulltext/u2/756689.pdf > Work on the Dynamic Modeling System began, effectively, in October, > 1969, when a used PDP-6 computer with 32K words of memory was > delivered to Project MAC. Does anyone know more about this PDP-6? Did it ever run ITS, like its PDP-10 successor?
