Cindy Neuschwander is a retired elementary school teacher who was inspired to write the Sir Cumference series while visiting medieval castles in England. She now works part-time as a math remediation teacher and in the teacher-training program at California Polytechnic State University.

Wayne GeehanĀ is the illustrator of Multiplying Menace, Cut Down to Size at High Noon, and the Sir Cumference series. www.waynegeehan.com