"Basic Photographic Materials and Processes" is a required textbook in the RIT School of Photography. Also known by students as, "M&P". My former professor, Dick Zakia, approached me at an alumni event during the '98 Photo Expo, in NYC. Dick, one of the authors of the M&P book, approached me at an RIT alumni gathering and asked if I'd be interested in writing the new Digital Chapter for the book.
Of course, I was honored to be asked, and agreed to do it. I wrote the chapter and did all the photos and illustrations. However, digital photography is still changing and the chapter has had to be re-written several times since. It was nice to be able to add an author credit to my resume.