File:View of a classification yard at C & NW RR's (i.e. Chicago and North Western railroad's) Proviso yard, Chicago, Ill. LCCN2017878016.jpg
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![File:View of a classification yard at C & NW RR's (i.e. Chicago and North Western railroad's) Proviso yard, Chicago, Ill. LCCN2017878016.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/View_of_a_classification_yard_at_C_%26_NW_RR%27s_%28i.e._Chicago_and_North_Western_railroad%27s%29_Proviso_yard%2C_Chicago%2C_Ill._LCCN2017878016.jpg/782px-View_of_a_classification_yard_at_C_%26_NW_RR%27s_%28i.e._Chicago_and_North_Western_railroad%27s%29_Proviso_yard%2C_Chicago%2C_Ill._LCCN2017878016.jpg?20181222101718)
Size of this preview: 782 × 600 pixels. Other resolutions: 313 × 240 pixels | 626 × 480 pixels | 1,002 × 768 pixels | 1,280 × 982 pixels | 2,560 × 1,963 pixels | 7,930 × 6,081 pixels.
Original file (7,930 × 6,081 pixels, file size: 3.44 MB, MIME type: image/jpeg)