As a detective, the first step in solving the mystery of the crossword clue “Creator of Aunt Annie and Benjamin B. Bickelbaum” is to dive into the world of literature. Immediately, the name Dr. Seuss pops up in my mind, famous for his whimsical characters and playful rhymes. The clue mentions two specific characters, Aunt Annie and Benjamin B. Bickelbaum, so I begin to look for them in Dr. Seuss’s works. As I go through his extensive collection of children’s books, I come across a book titled “I Had Trouble in Getting to Solla Sollew,” which features both Aunt Annie and Benjamin B. Bickelbaum. This leads me to the conclusion that Dr. Seuss is indeed the creator of these characters. The letters fit perfectly in the crossword as well, cementing his name as the answer. Overall, it was an exciting journey of exploring literature, following clues, and piecing together information to solve the mystery of the crossword clue.