The cannon ball tree : the monkey pots.
The cannon-ball tree
Dahlgren, B. E.
Field Museum of Natural History,
Signed: B.E. Dahlgren.
Pages also numbered - at foot of pages.
Fieldiana, Popular series, Botany, was published by Field Museum of Natural History, Dept. of Botany as Leaflet (no. 1-9, 1922-1924), and as Botany leaflet (no. 10-25, 1924-1940), and by Chicago Natur
Leaflet (Field Museum of Natural History. Dept. of Botany) ; no. 6