Over several terms, Jack Green wrote most of the book's content as a Word/PDF document for use in his face-to-face and online Precalculus courses at Mt. Hood Community College.
In 2016/2017, Nick Chura, Jack Green and Dr. Alex Jordan converted the material to MathBook XML (enabling the HTML output alongside a PDF) with support from an Open Oregon grant.
Special thanks to Dr. Rob Beezer, David Favreault, Jim Hatton, Robert Hauss, Dr. Alex Jordan, Dr. Elise Lockwood and Gina Shankland for proofreading and review.