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First examples
editI'd always expected that the US would have some of these in the 1930s, but so far I can't see any (they're B-B or A1A-A1A). Which were the first mainline diesel-electric Co-Cos? Andy Dingley (talk) 12:04, 10 September 2019 (UTC)
- I'm not certain, but I would think it would be something in EMD's SD series. There may have been an earlier Baldwin or Alco design. Slambo (Speak) 13:39, 17 July 2021 (UTC)