Erin Anderson spends a lot of her time studying things that are not there and talking about places that have disappeared.
Among them: The Baptists of Helvetia, the unlucky legacy of San Francisco, how Hollywood got its name, how Bongards is disappearing and why Mound St. Clair existed only on paper.
These stories harken back to the 15 or more "ghost towns" that dotted Carver County over the past 150 years, but which have since disappeared and receded into memory.
"There are a lot of lost memories there," said Anderson, the education coordinator of the Carver County Historical Society. "Of all the towns that have existed in Carver County, about half have become ghost towns."
Anderson has a traveling exhibit on ghost towns, or "Lost Communities," that she takes to schools around the county.
While the program is aimed primarily at elementary school audiences, she also has an adult presentation she takes to nursing homes or other locations where people want to hear stories about Carver County's past.
Among the props that Anderson uses are donated photographs, some more than 100 years old, that capture the essence of places such as Benton, Scandia or Hazelton.
Often, she said, the photographs trigger memories of many adults who recall the places from their youth.