Pam Pollack and Meg Belviso are authors of several books in this series, including Who Is George Lucas?, Who Was Alfred Hitchcock?, Who Was Alexander Hamilton?, Who Was Celia Cruz?, and Who Is Neil DeGrasse Tyson?

Andrew Thomson is an illustrator and artist, currently living and working near Guildford in the south of England. He studied illustration in Preston and graduated in 2010, and has been exchanging pictures for money ever since.