Not all passenger cars in mixed service had steam heat, they had coal stoves and could be located either in the front or rear of the train.? My "cabbage" model is based on a Santa Fe prototype that was used as a caboose for the local.? Note the stack near the end of the car.
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Also, the CB&Q had a shorty combine that was also used as a caboose.
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Rich G(ajnak)
