Persifor Frazer
(Philadelphia: 24th July, 1844 - 7th April, 1909)
After serving in the Civil War, Ens Persifor Warner Frazer Sr. studied Chemistry and Mineralogy. He received several academic honors and was actively publishing his professional work.
Additionally, Frazer was internationally respected as an expert on handwriting. He devised a process for detecting forgeries through composite photography, leading to a closer study of handwriting. By powerful, microscopic viewing of handwriting, Frazer found that tremors or quivers appear uniformly throughout a person's handwriting. Therefore, microscopic examination can detect forgeries by matching these tremors from one example to another. He first published his findings in his work Bibliotechs, or the Study of Documents in 1894.
