Wholesale price list of mushroom spawn - American Spawn Company (Saint Paul, Minn.); Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (St. Paul, Minnesota, American Spawn Company, [1927?], 1927)
https://www.biodiversitylibrary.org/bibliography/136785
Keywords: Catalogs|Minnesota|Mushroom industry|Mushrooms|Nursery stock|Saint Paul|