eBooks and Memory

I was listening to a BBC radio programme yesterday evening about Edith Wharton. Various people were talking about various of her novels, all of which I had read. But I couldn't remember, just from the titles, which was which. Is it my poor memory, I wondered (it could well be), or has it to do with her titles, or could it be that I had read them all on my Kindle? There are no running headers on a Kindle, and no cover on the book you pick up each day to imprint on the mind's eye.

Mind you, back in the day when Penguin covers were all the same, was this a problem?