For making derivatives, the original image is at Image:GiffordPinchot3c03915u.png. https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons
Wikimedia projects - it will not thumbnail properly. Use Image:GiffordPinchot3c03915u.jpg instead. https://creativecommons.org/publicdomain/mark/1.0/PDMCreative