Tradelist, season 1937 : herbaceous perennials, rock plants, Alpine plants and homegrown seeds, Weller's perennials with that wonderful root system - Weller Nurseries Company.; Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Holland, Michigan, Weller Nurseries Company, Inc, [1937], 1937)
https://www.biodiversitylibrary.org/bibliography/168396
Keywords: Bulbs (Plants)|Catalogs|Holland|Michigan|Nursery stock|Perennials|Rock plants|Seedlings|