 This discovery inspired Keith to not only conduct non-scientific excavations at Las Mercedes, but also to collect artifacts from all over Costa Rica.Eventually Mr. Keith collected 16,608 artifacts, some of which were auctioned off after his death.Most of these artifacts, some of which are from Las Mercedes, are now housed by the Brooklyn Museum and the American Museum of Natural History in New York, the Smithsonian Institution in Washington, D.C., and the Ethnography Museum in Sweden.