Minnesota Historical Society Field Secretary Cecil W. Shirk and guide Paul LaGarde (Fond du Lac Ojibwe) stand on the foundations of a building at the site of Fort Charlotte, July 10, 1922. Fort Charlotte was the depot at the western end of the Grand Portage trail, on the south shore of the Pigeon River. Shirk (at right) stands in the remains of a cellar, and LaGarde (left) stands on foundation remains. The image is from a 1922 expedition initiated by MNHS director Solon Buck to retrace and recover the trail, which was threatened by private landowners. Publicity from the expedition sparked interest amongst white Minnesotans in preserving the trail and depot sites.