Strong Women Stay Young has been a real motivator for me! I am 67 and have been following the program for 10 months. My limit seems to be 10 pounds for both arms and legs. Could you give me guidance for maintenance? Is once a week enough?

It's best to continue doing the exercises twice a week. You needn't attempt to increase the weights, but I suggest you swap exercises periodically - you'll work more muscles, and your program will remain fresh. You can use the supplemental exercises in the book, or find a personal trainer.