As in the previous post, these are from a newspaper held in the Bureau of Medicine and Surgery's archives, in Falls Church. The run is being digitized and put online in the Medical Heritage Library.
I'm not actually sure if the Doonesbury panel is actually a PSA, or if an enterprising editor just pulled it out from a strip. Any thoughts?
These are from the US Naval Hospital Memphis' newspaper The Hospital Clipper from 1972-1973.