Hammond is the largest city in Tangipahoa Parish, Louisiana, United States. It is home to Southeastern Louisiana University. The city was the home base for production of the first season of the NBC television series In the Heat of the Night. Hammond is the principal city of the Hammond Micropolitan Statistical Area, which includes all of Tangipahoa Parish. In 1854, the New Orleans, Jackson & Great Northern Railroad (later the Illinois Central Railroad, now Canadian National Railway) came through the area, launching the city's emergence as a commercial and transport center. The point where the railroad met Peter's trail to Springfield was at first known as Hammond's Crossing. Peter Hammond is buried on the east side of town under the Hammond Oak along with his wife, three daughters, and a favorite slave boy (see inset showing the spreading oak at gravesite).