Volunteers with the Save Abandoned Babies Foundation went walking in Chicago to distribute 55,000 informational cards. Chicago police officers helped out.
The Safe Haven law allows parents to leave a newborn at hospitals, police stations or firehouse without fear of prosecution.
Fifty eight infants have been dropped off at safe havens since the law was passed in 2001. But Illinois Attorney General Lisa Madigan says more people need to know about the law.
"What we believe is if everybody knew that they could safely relinquish an infant that they would choose that option. But most people haven't been informed which is one of the reasons we are working so hard today passing out 55,000 cards with Lifesavers on them to let people know about this law," said Madigan.
The Save Abandoned Babies Foundation says three newborns were dropped off at hospitals in the last month alone.