History of City Beautiful movement; World Expo in St. Louis [Burpee was there?]); https://philadelphiaencyclopedia.org/archive/horticulture/ early development of suburbs increase interest in gardens and horticulture; Local and national projects

  • Box 417, Louisiana Purchase Burpee exhibit photograph, 1904
  • GCA historic garden images?  Social statement of the Haupt Garden?
  • Burpee newspaper clippings?