Discovery of DMP files from 1913 not surprising

Back in the 1940/50s as a school boy visiting Dublin, a friend of my uncles used to take me to The Stadium to boxing matches — himself no mean performer. He was then a Garda sergeant. He told me of his early duties while stationed in Rathmines to service the part-time station in Terenure.
One day (in the late 1930s), to pass time, he opened a large metal cabinet and found old duty books going back to the 1800s. In one he found details of the arrest of his grandfather — a blacksmith — being drunk and disorderly. It took six constables to restrain him. Those books were later sent to the waste paper drive!