below On Mon, Sep 23, 2013 at 2:07 PM, John Wilson <wilson at dbit.com> wrote: I'm 99.99% sure the BBN and MIT pagers are unrelated, even though they were both built for the KA10 and around the same time. Makes sense, that syncs with my memory. I don't remember much about the detail of either of them frankly. That said, I might not state "unrelated" as much as different. Everyone talked (argued) in those days and frankly LCS and BBN are not that far in distance from each other -- there was certainly a lot of flow of ideas if not bits. TOPS-20 and ITS paging are certainly different universes. That I remembered.