the 1960s and 1970s. Later use In 1957, the operation of the Little Big Inch, and its ownership south of Ohio, was transferred from TETCO to the subsidiary Texas Eastern Petroleum Products Corporation (TEPPCO), and converted back to use for petroleum products. TEPPCO was purchased by Enterprise Products in 2010. Around 1961, there was discussion of converting the Big Inch pipeline back to petroleum use, but it continued in use as a gas pipeline. In 1989, TETCO was taken over by the Panhandle Eastern Corporation, and in 1997 this company was merged with Duke Power, to form the Duke Energy Corporation; in 2007, the oil pipelines were spun off from Duke Energy, to form part of Spectra Energy Partners. The Inch pipelines are listed on the National Register of Historic Places. Along the western parts of the pipelines, around 90 percent of the pipes are the original installation, although in the east large parts have since been replaced, largely due to the absence of anti-corrosion protective coatings on the original piping. 62 of the original buildings from 1942 and 1943 remain, including pump-houses, offices, employee houses and garages. The best surviving examples of the original buildings are in Pennsylvania. A "Big Inch pipeline" construction playset was produced as a children's toy in 1962 by the Marx company. List of pumping stations Big Inch and northern Little Big Inch Station No. 1: Longview, Texas Station No. 2: Atlanta, Texas Station No. 3: Hope, Arkansas Station No. 4: Donaldson, Arkansas Station No. 5: Little Rock, Arkansas Station No. 6: Bald Knob, Arkansas Station No. 7: Egypt, Arkansas Station No. 8: Fagus, Missouri Station No. 9-a: Oran, Missouri Station No. 9-b: Gale, Illinois Station No. 10: Lick Creek, Illinois Station No. 11: Norris City, Illinois Station No. 12: Princeton, Indiana Station No. 13: French Lick, Indiana Station No. 14: Seymour, Indiana Station No. 15: Oldenburg, Indiana Station No. 16: Lebanon, Ohio Station No. 17: Circleville, Ohio Station No. 18: Crooksville, Ohio Station No. 19: Sarahsville, Ohio Station No. 20: Wind Ridge, Pennsylvania Station No. 21: Connellsville, Pennsylvania Station No. 22: Rockwood, Pennsylvania Station No. 23: Chambersburg, Pennsylvania Station No. 24: Marietta, Pennsylvania Station No. 25: Phoenixville, Pennsylvania Station No. 26: Lambertville, New Jersey Station No. 27: Linden, New Jersey Southern part of the Little Big Inch Station A: Baytown, Texas Station B: Beaumont, Texas Station C: Newton, Texas Station D: Many, Louisiana Station