Other
Physical geography.net: Concept of Uniformitarianism
This fundamentals of physical geography site provides a good overview of this early theory on the development landforms and the scientists that were involved in its conception.
Curated OER
Smithsonian Libraries: Scientific Identity: William Whewell (1794 1866)
A portrait of William Whewell from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.