Theda : Bill's origination - Bill's Glad Farms, Inc.; Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Canandaigua, N.Y, Bill's Glad Farms, [1924], 1924)
https://www.biodiversitylibrary.org/bibliography/130363
Keywords: Bill's Glad Farms; Inc|Bulbs (Plants)|Catalogs|Gladiolus|New York (State)|Nursery stock|Prices|Varieties|