Excerpt from the Register-Mail:
Owen Muelder’s office, in the old Knox County jail at Knox College, is something of a museum.
A table is spread with construction paper thank-you cards from ROWVA East’s fifth grade, offering crayon drawings of black stick figures darting behind trees and lamps lit in certain houses, but not others.
Four trowels, spotless but for autographs written in permanent marker, are displayed nearby: they were used to dig up soil from the yard in front of the house where Susan Neal van Allen Richardson lived in Galesburg after her escape and emancipation.
Two maps of different sizes of the Underground Railroad — one of western Illinois Underground Railroad sites and one of locations in and around Galesburg — hang both in Muelder’s Knox office and at the National Underground Railroad Freedom Center in Cincinnati. He made them himself.