"A co-citation  model of a scientific specialty: a longitudinal study of  collagen research" Social Studies of Science,  7(2). Theme Issue : Citation Studies of Scientific Specialties, p.139-166, May 1977.
http://garfield.library.upenn.edu/small/hsmallsocstudsciv7y1977.pdf

"Cited documents as concept symbols". Social Studies of Science, Vol:8, p.327-340, 1978.
http://garfield.library.upenn.edu/small/hsmallsocstudsciv8y1978.pdf

Garfield E., Small H., Vladutz G. "At the information Exchange"
Nature, Vol:319 p.272   23, January 1986
http://garfield.library.upenn.edu/papers/nature319p272y1986.html

"Recapturing Physics in the 1920s through Citation Analysis"
Czechoslovak Journal of Physics 36(1):142-147, 1986.
http://garfield.library.upenn.edu/small/hsmallrecapturingphysics1986.pdf

Small H., Garfield E. "The geography of science: disciplinary and national mappings" Journal of Information Science 11(4): 147-159, 1986.
http://garfield.library.upenn.edu/essays/v9p325y1986.pdf

Cogitations on Co-Citation - A Citation Classic Commentary on 
"Co-citation in scientific literature: a new measure of the relationship between two documents"
Current Contents / Social & Behavioral Science  (10): 10-10 MAR 9 1992  (A1992HE22300001) and 
Current Contents / Arts & Humanities (6): 20-20 March 16 1992 (A1992HF40400001).
http://garfield.library.upenn.edu/classics1992/A1992HE22300001.pdf
http://garfield.library.upenn.edu/classics1992/A1992HF40400001.pdf

Garfield E. "Co-Citation Analysis of the Scientific Literature: Henry Small on 
Mapping the Collective Mind of Science" (Introduction to ...
Small H. "Macro-level changes in the structure of co-citation clusters: 1983-1989"
Reprinted with permission from Scientometrics 26(I):5-20, 1993.
http://garfield.library.upenn.edu/essays/v15p293y1992-93.pdf

Garfield E. and Small H.  "Citation Format"
Journal of the American Society for Information Science 48(10): 963, 1997.
http://garfield.library.upenn.edu/papers/citation_format.html

"On the Shoulders of Giants" acceptance speech given on receiving the ASIS Award of Merit. 
Bulletin of the American Society for Information Science, Vol:25 (2) December 1998/ January 1999.
http://www.asis.org/Bulletin/Jan-99/small.html