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 F3 23L typifies the appearance of late 16 class units 22 through 36 in their final years. Note the firecracker type radio antenna at the rear of the roof. Two blast from the Leslie 3-chime air horn and 23L will leave Newton with a freight train this February day in 1970. |
 F3 19C has had a 36-inch dynamic brake fan added and the first two high mounted radiator fans replaced with low profile fans and wrecking lugs mounted on its nose at some point in its career. Units 16LC-21LC retained their long warbonnet paint to the end |
 Stewart's "Phase I" F3 represents the as delivered appearance of Santa Fe's 16 through 21. As indicated elsewhere this appearance was very short lived as they were converted to "Phase II" appearance, sans the center porthole and more "chicken wire". Except for addition of Kadee couplers and a road number, this model is unmodified. |
 F3B 21B has had two of its original high mounted radiator fans replaced with low profile fans and its original dynamic brake has been replaced with a 36-inch fan as well. Such modifications were extremely common on the early 16-class F3's. Photographed at Nickerson, Kansas in February 1970. |
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