McCullough's 1925 seed catalogue and amateur's guide - J.M. McCullough's Sons Company.; McCullough, R. S.; Parvin, Geo. H.; Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cincinnati, Ohio, J.M. McCullough's Sons Co, 1925, 1925)
https://www.biodiversitylibrary.org/bibliography/133357
Keywords: Agricultural implements|Bulbs (Plants)|Catalogs|Cincinnati|Flowers|Fruit|Grasses|Nursery stock|Ohio|Plants; Ornamental|Seeds|Vegetables|