I think in a lot of cases, it's partly a question of where the material was (on paper, not necessarily in libraries, possibly at obscure conferences). That's t

I think in a lot of cases, it's partly a question of where the material was (on paper, not necessarily in libraries, possibly at obscure conferences). That's the case for a various things I'd like to refer to, and the system I used for physics research was never written up anyway. In this context and example is information on Logica's RAPPORT, allegedly the first commercial, portable RDB, which had some significance in UK research support.