In some courthouses and records repositories, paper copies of records are still the norm. When making paper copies (or having them made), make note in pencil on the edge of the copy the name of the book, volume number and page number where the material was obtained.
You are not going to remember and at some point, you will want to know where the page was obtained. If you would rather not write on the front of the copy, then do it on the back.
But do it. You will be glad you did.