In the late 1960s, one could send off a letter requesting information about a commercial product and receive a nicely illustrated information package by return mail. GM EMD was kind enough to send - in reply to an 11 year old kid's letter - a large technical booklet (undated), describing the features of its new line of second generation diesel locomotives.
Here are the specifications for EMD's six-axle units from that booklet.
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Here are statistics on the production of these models - before they were supplanted by the Dash 2 line.
|from: The Second Diesel Spotter's Guide; Jerry A Pinkepank; 1980; Kalmbach Publishing.|
... the art of the late 1960s could be rather sparse.