1900 guide to pansy culture and catalogue of premium American pansy seeds - William Toole (Firm); Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Baraboo, Wis, William Toole, 1900, 1900)
https://www.biodiversitylibrary.org/bibliography/95754
Keywords: Catalogs|Nursery stock|Pansies|Wisconsin|