The "revised" texts are really new recensions of each book. New photos although I think some articles may be repeated from the Almanac.
I still remember the day I found My Scrapbook Memories. I believe it was 1987 and I was visiting a massive sci-fantasy type store in NYC called Forbidden Planet. I remember the warm feeling when I saw the cover of the book--like a snapshot from my own childhood scrapbook. I think KLS was very surprised by how vigorously the book sold.
G.