were rebuilt with hinged doors, insulated walls, and 2 windows for use as cream cars carrying an attendant to load and record milk cans. As the boxcars needed repair, they were rebuilt to the full height of the boxcars and renumbered in the 300 series with special-purpose modifications. Cars #302-304 had end doors and six windows on each side for use as express cars in passenger train service. Many later cars of the 300 series contained stoves to keep potatoes from freezing during winter shipment. Ten of the flatcars were rebuilt in 1910 as heated insulated boxcars #501–510 for potato loading. Boxcars #509 was rebuilt with hinged doors for cream car service after car #73 was destroyed in 1913. Flatcar #10 was rebuilt in 1913 with a derrick for placing riprap. The remaining three flatcars were rebuilt in 1916 into express cars #80–82 with end doors and 6-foot-wide side doors. Combination #6 was converted to an express car by removing interior features and placing protective bars across the windows. Locomotives Former units See also List of heritage railroads in the United States Notes References 1895, 1896, 1897, 1898, 1899, 1900, 1901, 1902, 1903, 1904, 1905, 1906, 1907, 1908, 1909, 1910, 1911, 1912, 1913 and 1914 External links WW&F Railway Museum WW&F Railway Facebook Page Heritage railroads in Maine Railroad museums in Maine 2 ft gauge railways in the United States Narrow gauge railroads in Maine Defunct Maine railroads Museums in Lincoln County, Maine