Bestand:Charles Walcott.jpgDescriptionCharles Walcott.jpg Charles Doolittle Walcott (1850 - 1927), U.S. stratigrafist & paleontologist. Third director of the United States Geological
Bestand:Charles Doolittle Walcott.jpgDescriptionCharles Doolittle Walcott.jpg Charles Doolittle Walcott (March 31, 1850 – February 9, 1927) Date Unknown date Source http://ihm.nlm.nih.gov/images/B25507