Useful information?

The top shelf of my bookcase contains some books my late husband collected. Can’t part with them.
This is a fascinating read. Apart from telling you take care of your AA telephone box key it gives you so much detail about individual towns.
Licensing hours, last time to post a letter and cost of meals in hotels (eg. 3/6d for breakfast)
The days when you wore leather driving gloves and got a salute from a patrol man if you displayed your badge.