Joe Nickell was an American skeptic and investigator of the paranormal. Nickell was a senior research fellow for the Committee for Skeptical Inquiry and wrote regularly for their journal, Skeptical Inquirer. He was also an associate dean of the Center for Inquiry Institute. He was the author or editor of over 30 books. Among his career highlights, Nickell helped expose the James Maybrick "Jack the Ripper Diary" as a hoax. In 2002, Nickell was one of a number of experts asked by scholar Henry Louis Gates Jr. to evaluate the authenticity of the manuscript of Hannah Crafts' The Bondwoman's Narrative (1853–1860), possibly the first novel by an African-American woman. At the request of document dealer and historian Seth Keller, Nickell analyzed documentation in the dispute over the authorship of "The Night Before Christmas", ultimately supporting the Clement Clarke Moore claim.
This is an excellent introduction to the field of forensic document authentication, I wish there were more books like it out there. Nickell gives an excellent sense of the approach taken by authenticators and forgers alike, and brings to light many surprising facts about the field. For a forgery and authentication novice, this book is filled with a number of wonderful insights into just how much work has to go into both tasks - you have to know much about the evolution of handwriting, the aging of inks and paper, not to mention the myriad challenges of actually distributing newly-made forgeries as if you had just discovered them. Highly recommended for the generalist and autodidact.