This map, with its distorted overhead perspective, shows Jersey City as disproportionately large, with the farthest points of the rail system fading into the distance. In 1979, the trains were still run by Conrail, but the PATH was already the PATH.
We can see how much the NJ Transit system has evolved since then.
For one thing, there are plenty of stations that are no longer around, like Great Notch, Roseville Avenue, Hackensack Fairmount Ave, Harmon Cove, North Rahway, Grant Avenue Plainfield, and South Paterson.
Entire lines have been abandoned since 1979. The West Trenton Line, a branch of the Raritan Valley Line, was abandoned in 1981. In 1984, the lower Port Jervis Line through Chester and Goshen was abandoned, and train were rerouted to another line to the north, where they run today.
The Montclair Connection in 2003 resulted in the abandonment of the lower Boonton Line between Hoboken and Montclair.
But in that time, there have also been huge improvements. Missing from the map are huge steps forward like Midtown Direct, The Hudson-Bergen Light Rail, and new stations like Hamilton, Ramsey Route-17, and Secaucus Junction
But since 1979, the PATH hasn’t changed much at all.