1. Michael, George A.: Director, Massachusetts Department of Health, Division of Food and Drugs: Personal communication.
2. Picchione, A. L., Ph.D., Director, Arizona Poisoning Control Program: Personal communication.
3. Jacobziner, Harold, Assistant Commissioner of Health, New York City Department of Health: Personal communication.
4. Sterling, James, and Burke, Vincent A., Youth Division, Chicago Department of Police: Personal communications and sociological comparative study of 47 glue sniffers (in press).
5. Warren, J. W., Captain; Azusa (California) Department of Police: Personal communication. (Ordinance No. 690, City of Azusa prohibiting the inhaling, drinking or breathing of certain substances.)