Craig, I keep a list on the computer and print out a new copy after I make a couple changes. I include the part # and "what year/make/model you have to ask for to get that part. So, I keep a copy on the computer, one printed out in a folder and once I start driving them I keep a folded copy in the nice new glovebox.....its a PITA but it does help. I refer to the one on my 37 pickup that I finished 10 years ago...as recently as a month ago for a belt.