Photo JEFF GRANIT staff Trish Chambers, wearing a type of bonnet women would wear in 1860, gives a presentation in period dress on the Underground Railroad. The event, including a brief history and with a focus on the quilts that played a key role in preparing and guiding slaves to freedom, was held at the Old Bridge Public Library Saturday. "Freedom Stairway," a second event in honor of Black History Month, will be held at the library Feb. 9.