Professor Felleisen is one of the original authors of the Racket language and a co-author of The Little Schemer and How to Design Programs. In 1995, Felleisen launched the TeachScheme! Project, reaching out to high schools with a radically novel computing curriculum. Felleisen is the 2012 recipient of the ACM Special Interest Group on Programming Languages (SIGPLAN) Lifetime Achievement Award as well as its Most Influential Paper Award. He is currently a Trustee Professor in the College of Computer and Information Science at Northeastern University in Boston, Massachusetts. Conrad Barski has an M.D. from the University of Miami, as well as nearly 20 years of programming experience. Currently, he is developing cardiology software for Wolters Kluwer Health.

He is also an avid cartoonist, having created the popular alien Lisp mascot, as well as many graphical web tutorials, including the "Casting SPELs" series. He is active in the D.C. developer community and an organizer of FringeDC, a group interested in fringe programming languages, where he gets to indulge in his love for "Lispy" programming languages with other DC language geeks. David Van Horn is a research professor, who has programmed in Racket and Scheme for over a decade. Van Horn organized a group of eight Northeastern University freshman students to write Realm of Racket: Forrest Bice, Rose DeMaio, Spencer Florence, Feng-Yun Mimi Lin, Scott Lindeman, Nicole Nussbaum, Eric Peterson, and Ryan Plessner.