CW, here's something to add to the Resources list (each one is a link):
Cycling Past 50 by Joe Friel
Bike for Life: How to Ride to 100 by Roy M. Wallack and Bill Katovsky
Food for Fitness: Eat Right to Train Right by Chris Carmichael (this source, more than any other, helped me understand the importance of food as
fuel, rather than just something to stuff in my mouth
)
And here's a booklet given to Hubby today when he joined a bike group for seniors:
Bicycling Street Smarts by John S. Allen