FREEDM_150213_490
Existing comment: "Horse in Hat" KKK postal cancel, Union Mills, Pennsylvvania, c 1870

This horse cancel, which comes from the same post office as the previous two examples, may refer to the Klan's torchlit midnight rides on horseback, or else a method of lynching that involved seating the noosed victim on a horse or donkey and then chasing the animal away.
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