The FR is not an FR convention, it's people have lives that don't involve being immersed in this lore. I feel a lot of this is coming from a perspective drenched in media, this is something fairly recent in human history, there was a time most people couldn't read, and weren't bombarded by iconography.
Library's used to refer to things kept under lock and key in manors, and museums were open by appointment, the dissemination of information in a pre-industrial society is a completely different animal.
