found: Its Office of the Chief Engineer. The Pennsylvania Railroad, 1948:map recto (The Pennsylvania Railroad; PRR)
found: LC data base, 2-24-84(hdg.: Pennsylvania Railroad Company; usage: Pennsylvania Railroad)
found: Its Annual report of the board of directors to the stockholders of the Pennsylvania Rail Road Company, Feb. 16, 1864(Pennsylvania Rail Road Company)
found: Daughen, J. Wreck of the Penn Central (1971):p. 206, etc. (Merged with the New York Central Railroad Company and the New York, New Haven, and Hartford Railroad Company to form the Penn Central Transportation Company in 1968)
found: Prowell, G.R. Hist. of Camden County, N.J., c1886:p. 349-352 (in May 1871 properties of United New Jersey Railroad and Canal Company leased to Pennsylvania Railroad for 999 years)
found: LC manual auth. cd.(hdg.: Grand Rapids and Indiana Railway Company; in 1921 leased to Pennsylvania Railroad for 999 years)
found: Gross, J. RR of N. Amer., c1977(Camden & Burlington County RR; taken over by Pennsylvania RR, 1853)
found: Clayton, B. Guide to Flemington, 1987:p. 84, etc. (Flemington Railroad Company; founded 1854; merged into Pennsylvania Railroad, 1871)
found: Its The shortest route from Boston, New York, & Philadelphia to the great West. Pennsylvania Central Rail Road, from Philadelphia to Pittsburg and thence by rail road to Cleveland, Chicago ... 1858.
found: Lease and contract ..., 1861:p. 1-8 (Philadelphia and Erie Railroad Company was taken over by the Pennsylvania Railroad Company on a 999 year lease)
found: Moody's transportation man., 1976(Penn Central Transportation Company; inc. Apr. 13, 1846 as Pennsylvania Railroad Co.; name changed to Pennsylvania New York Central Transportation Co. Feb. 1., 1968 upon merger of New York Central R.R. Co., and changed to Penn Central Co. May 8, 1969; Penn Central Transportation Co. adopted Oct. 1, 1969)
found: Annual Report of the Allegheny Valley Railway Company, 1910:page 13 (Pennsylvania Railroad took financial control of Allegheny Valley Railway in 1906, fully merged on Apr. 4, 1910)
notfound: NUCMC data from Rutgers Univ. Lib. for Sofield, E. Papers, 1845-1889 (Delaware and Raritan Canal Company);NUCMC data from Indiana Historical Society for Lomax, J. Papers, 1837-1945 (Grand Rapids and Indiana Railroad Company)NUCMC data from Burlington County Historical Society for Allinson family. Papers, 1719-1856 (Camden & Burlington County Railroad Co.)NUCMC data from Hunterdon County Hist. Soc. for Bartles, C. Papers, 1791-1905 (Flemington Railroad Company)
