Black swallowtail Papilio polyxenes Location: Valley Forge National Historical Park, Valley Forge, PA Year: 2013 Merckdigitals catalogue number: 04-82799 Comments:

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Black swallowtail Papilio polyxenes Location: Valley Forge National Historical Park, Valley Forge, PA Year: 2013 Merckdigitals catalogue number: 04-82793 Comments:

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