- The brilliant Photographer Ted Preuss:- www.preussphotography.com
- George Eastman House video about platinum prints (youtube link):- https://www.youtube.com/watch?v=6DFZ3wfft44
- Lois Cordelia Artist in Cut-Paper, Acrylics and Mixed Media:- www.LoisCordelia.com
- To learn more about Phi have a look here:- www.goldennumber.net
- Alfred Cheney Johnston the Ziegfeld Follies Lost Photographer:- www.alfredcheneyjohnston.com