Black and white photograph of Professor James Porterfield teaching in front of a blackboard. Text on the back of the photograph reads: "Prof. Porterfield '68". The back of the photograph is stamped with the Stanford Photographic Department stamp, Negative No. 14931-16a17
Copyright held by Stanford University. This copy is provided for educational and research purposes only. No publication, further reproduction, or reuse of copies, beyond fair use, may be made without the express written permission of the copyright owner.
