Home › Authors › Omer Edison Sperry 👤 Omer Edison Sperry 3 books Books by Omer Edison Sperry Texas range plants poisonous t Texas range plants poisonous to livestock 1955 Peavine, a poisonous range pla Peavine, a poisonous range plant in Texas 1952 Additions to the check list of Additions to the check list of Plants of the proposed Big Bend National Park Area 1920