Ask all contributors what name they would like you to use. I often use first names only or fake names, which were marked with an asterisk. It is very desirable to give addresses of buildings open to the public or list ghost tours available. Maps are also a plus. The more public buildings you can include, the better.
Readers love to see photographs of the places involved.
Drawings are OK, but photos are better. If you have a story about a photo which shows a ghost, don't you dare write about it unless you print the photo. I always send contrbutors a copy of the finished story before the book is printed. If something is factually incorrect, you have a chance to correct it. I do not ask for contributors' approval of the story or the way I portrayed them, just whether the facts are right.