Signature of William Clark at Pompeys Pillar National Monument ID: 1712 | This file appears in: Pompeys Pillar National Monument Source: Bureau of Land Management. Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Popi_sig550.jpg Download Original File SourceBureau of Land Management. Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Popi_sig550.jpg "Signature of William Clark at Pompeys Pillar National Monument" appears in: Pompeys Pillar National Monument
