The Meriwether Murder

Description for THE MERIWETHER MURDER by Malcolm Shuman:

From its laid-back cities and sleepy towns along the Mississippi to its picturesque yet treacherous bayous, Louisiana is a place rich in history--and history is Alan Grahams's business. A contract archaeologist located in Baton Rouge, Dr. Graham butts heads with developers who want to recklessly rip apart Louisiana's landscape for their own greedy purposes. During an exploration of decaying Desiree Plantation, Alan Graham comes across a tombstone labeled simply "Louis." His curiosity piqued, Alan ascertains that Louis may actually be the great 19th-century explorer Meriwether Lewis. But mysterious threats and murderous intrigue make a search into the past a desperate attempt to stop a contemporary killer.

This is #2 in An Alan Graham Mystery series.