Common mushrooms / by Leon L. Pray, Field Museum of Natural History.
Pray, Leon Luther,
Dahlgren, B. E.
Field Museum of Natural History,
"It is the purpose of this leaflet to illustrate and to describe briefly a number of the most common and conspicuous mushrooms." -- p. 
Includes introductory remarks by B. E. Dahlgren, Curator, Dept. of Botany.
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 Natura
QK1 .F43 no.18
Botany leaflet ; no. 18
Smithsonian institution Library