Best grown greatest offer American grown, domestic and imported glad bulb varieties also dahlia tubers in a variety of colors - Hartford Farms (Hartford, Mich.); Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hartford, Michigan, Hartford Farms, [1956], 1957)
https://www.biodiversitylibrary.org/bibliography/205784
Keywords: Dahlias|Gladiolus|Hartford|Michigan|Nursery stock|Prices|Roots|Varieties|