Craig, Philip R. The Woman Who Walked in the Sea (New York: Scribner's, 1991) 215 p.

This mystery's detective does a little investigating in the Edgartown Public Library on Martha's Vinyard. He thinks:

"Libraries are treasuries. They're mountains of information in which you can delve for free. They have things to read and places to read them, and you can even take material home with you. And librarians are also treasuries. When you can't find something yourself, they will show you how or else find it themselves. And unlike people at the Registry of Motor Vehicles, librarians want to help you." (p. 41).