The Monongahela Connecting Railroad (reporting mark MCRR) or Mon Conn was a three-mile industrial railroad line in Pittsburgh, Pennsylvania. It was a subsidiary of the Jones & Laughlin Steel Company and a large portion of its work was for its parent company, though it also served other industries along the line.[2][3][4]
- ^ "Guide to the Monongahela Connecting Railroad Company Records, 1966-1985," in "Monongahela Connecting Railroad Company Records," University of Pittsburgh, ULS Archives & Special Collections.
- ^ "Guide to the Monongahela Connecting Railroad Company Records, 1966-1985," in "Monongahela Connecting Railroad Company Records." Pittsburgh, Pennsylvania: University of Pittsburgh, ULS Archives & Special Collections, retrieved online January 7, 2023.
- ^ "Monongahela Connecting Railroad Locomotives." Pittsburgh, Pennsylvania: Historic Pittsburgh, retrieved online January 7, 2022.
- ^ "Monongahela Connecting Railroad Roundhouse." Pittsburgh, Pennsylvania: Historic Pittsburgh, retrieved online January 7, 2022.