The Babysitters Club Books:#1, 3, 4, 5, 6, 7, 10, 23, 40 The Babysitters Club Super Special Books:#3,7 (Book 3 has a "Special holiday Postcard from Ann M Martin" inside) The Babysitters Club Mystery Books:#2,5 Babysitters Little Sister Books:#1, 2,38 There's a small red or blue dot marking the on the cover of most of the books.. there are names written (and names marked out) on the cover page of a few of the books. And a couple of them have a "from the library of" sticker on the inside cover. (See images- all others have NO writing or stickers inside)