I recently finished reading a crappy science fiction novelette called The Purloined Planet by Lin Carter. It's a silly hardboiled detective story knockoff, but it did have one passage that caught my eye:
So voluminous had records become in this distant era, and so pressing a problem had their retention grown into, that in the age of the great Quicksilver entire planets were given over to their storage. This was true, even taking into consideration the latest advances in the fine art of micro-filming, which had by this time become so extremely sophisticated that it was, incredible as it may seem, quite possible to record the entire literary works of Isaac Asimov on the molecules contained in a single flake of mica.
See, now, if this story had been written in the past five or ten years, I would think that the author was making fun of the fact that in the Foundation series Asimov thought that in the future microfilm would be the highest form of information storage and that the best way to transmit a lot of information quickly would be to put it on microfilm and mail it. The mica thing could even be some sort of joke about semiconductors!
But in fact I think Lin Carter just thought it would be funny to mention that Asimov wrote a lot of stuff. Ah well.