1941 catalog of cactus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson Cactus Gardens, 1941)

A catalog of rare beautiful and curious plants : 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson Cactus Gardens, 1957)

Index Kewensis. names of seed-bearing plants at the rank of family and below published between January 1991 and the end of 1995 with some omissions from earlier years Supplement twenty - Royal Botanic Gardens, Kew. (Royal Botanic Gardens, Kew)

Robinson Nurseries, [19]39 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (James W. Robinson Nurseries, 1939)