Griswold designed, developed, and participated in the restoration and rededication of Mellon Park’s outdoor botanical garden in Pittsburgh, Pennsylvania to memorialize Mrs. Sarah Mellon Scaife. The botanical garden was developed to serve not only as a memorial, but as a source of study for botanical students, landscape professionals, and amateur gardeners alike. This garden promoted both the scientific and aesthetic understanding required to create botanical gardens. Included in this subseries is a diagramic sketch for the conversion of Mellon Park into Mellon-Scaife Botanical Garden and a site plan. Griswold worked on this project from 1966 to 1969. Additional files relating to this project may be found in Series V.