Cactus handbook, 1876-1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson Cactus Gardens, 1951)

Cage birds and bird world (F. Carl, 1908)

California art & nature (1902)

California dahlias, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Advance Dahlia Farm, 1930)

California dahlias : our 1924 greetings - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Advance Dahlia Farm, 1924)

The California horticulturist and floral magazine - Bay District Horticultural Society (F.A. Miller & Co, 1870)

The Caribbean forester - Burke, Lauretta Marie (Tropical Forest Experiment Station, United States Forest Service, 1939)

Carl Friedrich Forster's Handbuch der Cacteenkunde in ihrem ganzen Umfange :nach dem gegenwartigen Stande der Wissenschaft bearbeitet und durch die seit 1846 begrundetet Gattungen und neu eingefuhrten Arten vermehrt - Förster, Carl Friedrich. (Wöller, 1886)

Carl von Linnés ungdomsskrifter - Linné, Carl von, 1707 -1778 (P.A. Norstedt & söners, 1888)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1913)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1919)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1920)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1922)