Naturalists of the frontier

Samuel Wood Geiser

Penfield family

Samuel Wood Geiser

Sex-ratios and spermatogenesis in the top-minnow, Gambusia affinis ..

Samuel Wood Geiser

Scientific study and exploration in early Texas

Samuel Wood Geiser

A brief short title list of published works on the history of science

Samuel Wood Geiser

Horticulture and horticulturists in early Texas

Samuel Wood Geiser

Medical education in Dallas, 1900-1910

Samuel Wood Geiser

Naturalists of the Frontier

Samuel Wood Geiser

Inquiry regarding the final disposition of the (personal) conchological and botanical collections of Dr. Ferdinand Rugel, left at his death, in 1879

Samuel Wood Geiser

Naturalists Of The Fronter

Samuel Wood Geiser

A century of scientific exploration in Texas

Samuel Wood Geiser

A simple trap for the capture of terrestrial isopods

Samuel Wood Geiser

Greenleaf Cilley Nealley (1846-1896), Texan botanist

Samuel Wood Geiser

Memorandum ... regarding Ferdinand Rugel's collecting localities

Samuel Wood Geiser

"Naturalists of the frontier

Samuel Wood Geiser

Men of science in Texas, 1820-1880

Samuel Wood Geiser

Dr. Benno Matthes

Samuel Wood Geiser

Some frontier naturalists

Samuel Wood Geiser

Charles Wright's 1849 botanical collecting trip from San Antonio to El Paso

Samuel Wood Geiser

Dr. David Porter Smythe, an early Texan botanist

Samuel Wood Geiser

Thomas Nuttall's Botanical Collecting Trip to the Red River, 1819. Map, Thomas Nuttall's Route from Fort Smith and Return

Thomas Nuttall

Penfield Family

Samuel Wood 1890- Geiser