1. Further Notes on Double Cover-Glass Mounts
2. Conn, H. J. 1953. Biological stains. 6th Ed. 367 pp. The Williams and Wilkins Co., Baltimore, Md.
3. Glick, David. 1949. Techniques in histo- and cytochemistry. 531 pp. Inter-science Publishers, Inc. New York, N. Y.
4. Gomori, George. 1952. Microscopic histochemistry. 273 pp. University of Chicago Press. Chicago, Ill.