Orville Adalbert Derby
Orville A. Derby; Orville Derby; O.A. Derby
* July 23, 1851 – November 27, 1915 †
geologist, mineralogist, naturalist
American geologist
http://www.wikidata.org/entity/Q7105218
https://en.wikipedia.org/wiki/Orville_Adalbert_Derby [View]