15 books • 4 series
Book #1: The Howling Dog and Other Cases
Book #1: Einstein Anderson #1
Book #2: The Halloween Horror and Other Cases
Book #3: The Gigantic Ants and Other Cases
Book #3: Einstein Anderson #3
Book #1: Winning Ticket!
Book #2: Prize-Winning Private Eyes
Book #3: Ten's a Crowd
Book #4: Moving Up
Book #5: Ship Ahoy!