… and in the same box of old issues of Rider & Driver, I found another photo of one of the horses in yesterday’s sleighing photo:

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"Dutchess Maude: Master Charles F. Elmes, five years old, driving Mr. Carleton L. Elmes' trotting-bred Hackney mare at Winnetka, Illinois" (from Rider & Driver, May 30, 1914)