Contains data on every PRR freight car used in interchange from 1888 to 1926. This disk contains the following issues of ORER's: 1885, 8-1888, 5-1893, 12-1896, 12-1897, 5-1898, 10-1900, 12-1901, 2-1902, 2-1903, 2-1904, 6-1905, 8-1906, 1-1907, 2-1908, 10-1909, 12-1910, 12-1911, 9-1912, 6-1913, 9-1914, 1-1915, 3-1916, 9-1917, 2-1918, 2-1919, 6-1920, 8-1921, 2-1922, 8-1923, 8-1924, 5-1925, 6-1926.