Eugene Garfield (1925-2017), Information Scientist and Father of Citation Analysis
Eugene Garfield founded the Institute for Scientific Information (ISI) in 1955 along with the Science Citation Index, which evolved into the database Web of 
Science. Through his work with ISI, he founded citation analysis, developing the journal impact factor. This data is accessible from such platforms as Journal Citation Reports, which is extracted from Web of Science content. He passed away on February 26 at the age of 91.
To learn more about Dr. Garfield’s achievements in research, consult these sources:
Articles:
Garfield, E., & Pudovkin, A. (2015). Journal Impact Factor Strongly Correlates with the Citedness of the Median Journal Paper. COLLNET Journal Of Scientometrics & Information Management, 9(1), 5. doi:10.1080/09737766.2015.1027099.
Garfield, E. (2012). A Century of Citation Indexing. COLLNET Journal of Scientometrics & Information Management, 6(1), 1. doi:10.1080/09737766.2012.10700919.
Books:
Garfield, E., Cronin, B., & Atkins, H. B. (2000). The web of knowledge: A festschrift in honor of Eugene Garfield. Medford, N.J.: Information Today.
Garfield, E. (1977). Essays of an information scientist. Philadelphia: ISI Press.
Online videos:
50 Years of Citation Indexing: A visit with Dr. Eugene Garfield (YouTube)
Story of his Life told by himself. Lessons from a Life in Science (Web of Stories)
The birth of citation indexes by Eugene Garfield (1967). (YouTube)