Herbert William Mullin early 1970's Santa Cruz, California serial killer serving life in prison for 13 murders he committed which he said were carried out to prevent earthquakes. 

Approximately 6" x 9" Dr. Albert Einstein's principles of relativity on one side.
On the other side is a writing titled, "4 great blue herons". 
Each side is hand signed, H.W. Mullin.

Herbert Mullin Principles of Relativity Signed