The English rock-garden - Farrer, Reginald John, 1880 -1920 (Jack, 1919)

International catalogue of scientific literature M Botany - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1913)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1913)

Just's Botanischer Jahresbericht - Just, Johann Leopold, 1841 -1891 (Gebruder Borntraeger, 1911)

Publication. Field Museum of Natural History Anthropological series - Field Museum of Natural History. (The Museum, 1940)

Publication. Field Museum of Natural History Anthropological series - Field Museum of Natural History. (The Museum, 1940)

Revue générale de botanique (Libraire générale de l'enseignement, 1911)