Ed Krenzelok of the Pittsburgh Poison Center at Children’s Hospital displays ‘Mr Yuk.’ A St. Paul, Minn., councilman used the likeness on signs and attracted the center’s copyright lawyers. AP file ...

I was sitting in my office the other day talking with my editor, and out of the blue I told her that we needed to find out what happened to things like Mr. Yuk. Do you remember Mr. Yuk? I don't know ...

PITTSBURGH — The man who came up with the “Mr. Yuk” symbol to warn kids of poisons has died. Moriarty died peacefully on Sept. 7, according to his obituary. University of Pittsburgh Medical Center ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. PITTSBURGH (AP) — Dr. Richard W. Moriarty, a ...