Parrella's 1957 dahlia catalogue - Parrella Dahlia Gardens.; Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New York, New York, Parrella Dahlia Gardens, [1957], 1957)
https://www.biodiversitylibrary.org/bibliography/206027
Keywords: Bronx County|Catalogs|Dahlias|New York (State)|New York County|Nursery stock|Varieties|