<https://www.americanroadmagazine.com/forum/topic/1933-building-the-illinois-national-road/#comment-17962>
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"Jim, \n  \nI agree, you are right, I am mis....mis...mista.......wrong!. The photo you found of the Caterpillar 60 matches the old B&amp;W well enough to convince me, as it did you, that the tractor is a 60. And before the merger in 1925, the 60 would have been marked a Best. So the old B&amp;W photo was after 1925. \n  \nShucks!! \n  \nDave \n  \nKeep the Show on the Road \n"
<https://www.americanroadmagazine.com/forum/topic/1933-building-the-illinois-national-road/?tab=comments#comment-17947>