"Railway Mileposts: British Columbia Vol II Southern Routes" by Roger G. Burrows (Must Have)
"Driving the Kettle Valley" by John White (not available any more)
"Cycling the Kettle Railway" by Dan & Sandra Langford
"Kettle Valley Railway Mileposts" by Joe Smuin !!! (Must Have)
"The Kettle Valley and its Railways" by Hal Riegger (a difficult find)
"McCulloch's Wonder" and "Steel Rails and Iron Men" by Barrie Sanford
"The Crow and the Kettle" by John Garden recently published.
"Exploring the Kettle Valley" by Beth Hill (now somewhat outdated)
"Steam on the Kettle" by Doug Turner
I recommend the Al Reynish's video which he made travelling by 4x4 and bicycle in 2002. Al's website.
Then of course there is my own video on the Princeton Sub (Website) along with the Merritt Cablevision production of a number of years ago which included footage from various sources. Not available anywhere, if you didn't get it on cable some years ago you're out of luck. Brian Dodd, the original producer is now making noises about redoing it ?!?!
Best Website on the Internet devoted to the Kettle Valley RR.:
Hector Turner's Website at http://members.rogers.com/kettlevalley/
The "Weekend Magazine" of Dec 15 1979 great article of the last motorcar ride across the Carmi Sub.(Ernest Eady)
Beautiful BC Magazine of Fall of 1994 has a nice spread