Dating Early Picture Postcards
Mystery Picture Postcard - The Answer
Hereford Bridge & Cathedral - The river is the Wye
Almost every month I get a query from someone who has confused Hertford and Hereford. In this case one can assume that the photographer knew where he was when he took the photograph. Perhaps the printer could not read his writing!
Moral: Just because it is in print does not mean that it is correct.
If you can add to the information given above tell me.