Cattleya hybrids special list, 1947 - Armacost & Royston.; Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Los Angeles, California, Armacost & Royston, Inc, 1947, 1947)
https://www.biodiversitylibrary.org/bibliography/182667
Keywords: California|Cattleyas|Los Angeles|Nursery stock|Orchids|Prices|Roots|Varieties|