Lea Wait writes the Antique Print Mysteries which started in 2002 and takes place in New Jersey. It features recently widowed Maggie Summer who is the owner of Shadow Antiques. Maggie is also a history professor at the local junior college... she may be an antique print expert but she is also good at solving murders.
The first book in this series, Shadows at the Fair, was nominated for an Agatha Award for Best First Novel.
Books in this series:
Shadows at the Fair (Antique Print Mystery Series #1)
Shadows on the Coast of Maine (Antique Print Mystery Series #2)
Shadows on the Ivy (Antique Print Mystery Series #3)
Shadows At The Spring Show (Antique Print Mysteries Series #4)
Shadows of a Down East Summer (Antique Print Mystery Series #5)
Shadows on a Cape Cod Wedding (Antique Print Mystery Series #6)