PITTSBURGH — State police say a mother and her daughter died in a fatal collision Saturday between a truck trailer and a horse-drawn Amish buggy in northwestern Pennsylvania.

Authorities say 34-year-old Mary Byler of New Wilmington and her 11-year-old daughter, whose name was withheld, died in the crash. Byler's husband, 35-year-old William Byler, was seriously injured and flown to St. Elizabeth Health Center in Youngstown, Ohio.

Emergency dispatchers say the incident happened late Saturday afternoon, about 60 miles northwest of Pittsburgh. The truck was driven by 36-year-old Matthew Coulter of Pulaski.

Both victims were pronounced dead at the scene by Mercer County Coroner Brad McGonigle, who says they died of blunt force trauma.

State Police are investigating.

PITTSBURGH — The country's first specially designed gas station opened 100 years ago in Pittsburgh, selling fuel for 27 cents a gallon.Gulf Refining Co. opened the Baum Boulevard station on Dec. 1, 1913, but no trace of it remains today. The small building featured a pagoda-style roof, and it was a major improvement over the usual alternative at the time — roadside shacks that sold fuel from barrels. The Pittsburgh station was specifically designed to sell fuel and oil, and it gave out free road maps, according to the National Association of Convenience Stores.At the time, Gulf Oil's headquarters were in Pittsburgh. Brian Butko, director of publishing at the Sen. John Heinz Regional History Center, said that in 1913 the station opened without much fanfare. The station sold 30 gallons of fuel that first day — less than 1 percent of the average volume at fueling stations today — and it was staffed 24 hours a day.The site is marked with a Pennsylvania state historic plaque, but no events were planned there for the anniversary.

STATE COLLEGE — Penn State University is in the process of installing more than 600 security cameras in dormitories and common areas of its main campus.Penn State administrator Stan Latta says the work began in October and should be done by next May, a Philadelphia newspaper reports.Latta says Penn State already has cameras in dorms at its campuses in Altoona, Beaver, Berks, Harrisburg, Hazleton, Mont Alto and Greater Allegheny.The school says the cameras will monitor ground-floor entrance lobbies, exit stairwells, elevators and commons service desks. No cameras will be installed in dorm rooms, bathrooms, or other areas that would violate student privacy.