<Li> Dawn and the Older Boy (September 1990) - The members of the Baby - Sitters Club are determined not to let Dawn get hurt by her boyfriend Travis, who is older and always bossing her around . </Li> <Li> Kristy's Mystery Admirer (October 1990) - Kristy receives mysterious love notes, which soon turn threatening . </Li> <Li> Poor Mallory! (November 1990) - When Mallory's father loses his job, she finds it hard sitting for the wealthy Delaneys . </Li> <Li> Claudia and the Middle School Mystery (January 1991) - Claudia is accused of cheating on a test, and the Baby - Sitters Club is determined to clear her name . </Li>

How many books are there in the babysitters club