The word at the upper left of the reefer appears to be “CHICAGO”, and based upon a listing in the January 1910 ORER, I think we’re likely looking at a car listed by the Chicago Refrigerator Car Co., which apparently also used the name Chicago Refrigerator Despatch – which would account for the “D” in the reporting mark – and the part letter peeking out from behind the pole and noise appears to be an “R” (the ORER does not give a reporting mark or any stencilling information for this operator). The car number in the photo is 9_55, which is also consistent with the 9000-series cars given in the ORER listing.