February 22, 1940

Professor Txe-Ching Huang

Department of Chemistry

National Associated Universities of the Southwest

Kunming, Yunnan

China

Dear Professor Huang:

Dr. Chia-Si Lu has asked me to write to you about him. Dr. Lu has been working in our Laboratories for several months, on the determination of the structure of amino acids by the x-ray analysis of compounds of amino acids with metals. This work has been done under my general supervision, in collaboration with Dr. A. J. Stosick. Dr. Lu is well trained in experimental work and is a very able and clever man along theoretical lines. He has grasped the complex and difficult techniques of the x-ray analysis of the crystals with extraordinary ease, and is doing first-class work. From supervision of his research, from conversations with him about scientific subjects, and from hearing the reports on the researches which he carried on in London I can say that he is a very well trained and able physical chemist, with understanding of modern developments in the field. I give him accordingly a very strong recommendation.

Sincerely yours,

Linus Pauling, Chairman

Division of Chemistry and Chemical Engineering

LP:j