Matthias Felleisen is Trustee Professor of Computer Science at Northeastern University, recipient of the Karl V. Karlstrom Outstanding Educator Award, and co-author (with Daniel Friedman) of The Little Schemer and three other "Little" books published by the MIT Press.
Conrad Barski has an M.D. From the University of Miami, as well as nearly 20 years of programming experience. Barski is a cartoonist, programmer, and the author of Land of Lisp. He's been using bitcoins since 2011.
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.