EarthTimes.org has a press release about a 1996 novel with a connection to Lunar Lander Challenger BonNova being introduced in audio versions. It's called Flight, it's by Vanna Bonta, and it has a fictional spacecraft called The Lauryad. As the BonNova site says:
Announcement October 30, 2007 It was an honor to participate in the Northrup Grumman X-Prize Cup Lunar Lander Challenge. BonNova would like to thank its investors and supporters. Chief Engineer Allen Newcomb welcomes two new engineers on board, Dan Kent and Bob Noteboom, and would like to thank Vanna Bonta for her contributions, without whose inspiration this project would have never taken flight.