Manning Collection. The collection consists of approximately 1,850 of Manning’s drawings, plans, and blueprints; photographs and clippings; glass lantern slides; published Manning office project reports; and journal articles by and about Manning. Grundmann has published a brief article on Manning in American Landscape Architecture: Designers and Places, presented a paper on the Milwaukee parks designed by Manning, and been involved with rehabilitation and restoration plans for several historic properties in the Midwest.