This image was acquired from
flickr. 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:
blackandwhite monochrome outdoor black and white Images from an album of images of the Panama Canal Zone from Milton BlackstonePlease Tag these images so that the information can be permanently stored with the digital file.Repository San Diego Air and Space Museum Images from an album of images of the Panama Canal Zone from Milton