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Humorous postcard depicting a farmer pulling a donkey loaded with wheat, with the legend: « The Donkey — No, I will not go any further! Last season I carried a load of wheat half as heavy to the mill. The Farmer — Yes! but I was not yet using Alsace Potash. » Reverse: publisher « Sels de Potasse d'Alsace », printed in Paris, with space for correspondence and address.