The Lost and Found Library Mysteries
Every librarian finds things in returned books. Margaret Hale is the one who gives them back. In Millbrook, Pennsylvania, a Berks County steel town where the mill closed years ago, a pawn ticket, a recipe card and an old key each lead to a secret somebody kept for decades. Gentle, small-town, no murders.
3 books, in reading order

Rose's Ring
The Lost and Found Library Mysteries
Every librarian finds things in returned books. Margaret Hale is the one who gives them back. On a rainy Monday in Millbrook, Pennsylvania, Margaret fishes a waterlogged copy of Great Expectations out of the library book drop. Tucked inside is a pawn ticket from 1987. Someone has written one word on it in pencil: Ring.

Rhoda's Recipe
The Lost and Found Library Mysteries
A recipe card that vanished one Christmas in 2004 has just come back to the library inside a cookbook.

Vivian's Key
A Lost and Found Library Mystery
The key came back on Christmas Eve. The woman who left it knocked on Christmas morning.