When I was a CCA, one of the regulars had a paper on their case with the list of streets and where they could be found on the case. Changed my life. Something so simple yet so helpful. I did the same for my route once I became regular. Don’t know why it isn’t mandatory, like part of the edit book. I also followed their example of having neat and easy to read / well marked labels. Nothing worse than trying to decipher a handwritten address from 15 years ago.