Looks like the hospital released info that used to be in every paper. There would be a heading at the top - ABC General Hospital - and then a list of all births for that week, parents names, boy or girl and date. For years, hospitals did it routinely, before HIPAA. Then they used to ask if they wanted it published. The hospital I worked at stopped doing it when a local woman found a new mom, found her home and killed both parents, while kidnapping the newborn baby, back in 1986.
The birth of illegitimate chldren was never announced in 1961