http://nonfigurativephoto.blogspot.com/2011/08/hand-of-paul-bloomfield.html
http://www.springfieldmuseums.org/the_museums/fine_arts/exhibits/view/167-camera_obscured_photograms_by_paul_bloomfield
www.tinytoones.org
http://epicarts.org.uk
http://pharecircus.org
https://connectingpoint.nepm.org/