Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1926)

The Desert Garden of Jesmond Dene, 1933 - Beecroft, W. I. (Willey Ingraham), 1870 - (W.I. Beecroft, 1933)

Grafted peanut cactus "Chamaecereus Sylvestrii" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Quality Hill Cactus Home, 1944)

Home gardening - Trivedi, Pratibha P. (Indian Council of Agricultural Research, 2010)

Home gardening - Trivedi, Pratibha P. (Indian Council of Agricultural Research, 2010)

Home gardening - Trivedi, Pratibha P. (Indian Council of Agricultural Research, 2010)

Retail price list 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gates Cactus Inc, 1956)

Zygocactus truncatus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Quality Hill Cactus Home, 1945)