"Dakota Resources: The Harriet Montgomery Walter Resources Collection at Northern State College"https://sdshspress.com/journal/south-dakota-history-16-1/dakota-resources-the-harriet-montgomery-walter-resources-collection-at-northern-state-collegehttps://sdshspress.com/@@site-logo/sdshp-logo.jpg
"Dakota Resources: The Harriet Montgomery Walter Resources Collection at Northern State College"