This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Andrew Curtin. Andrew Gregg Curtin governor of Pennsylvania Glass negative wet collodion LOCimage cwpbh Mathew Brady or Levin Handy restored by Michel Vuijlsteke between and Restored version of File Andrew Curtin Dust scratches and tears removed Parts reconstructed by using other half of stereophotograph loc gov pnp Histogram