Karen's Dinosaur is the 73rd book in the Baby-Sitters Little Sister series.
Back Cover SummaryEdit
Karen is thrilled. Her class is going to New York City! She can't wait to see her pen pal, Maxie, and have a picnic in the park. But best of all, Karen's and Maxie's classes are going to the museum — to see dinosaur bones!
Then Karen gets in a fight with her stepbrother. David Michael is mad because he can't go see the dinosaurs. Is David Michael going to ruin Karen's trip?