What exactly are you looking for that you’re not finding? I found plenty of books on arson on amazon. Fire investigation, biopics, psychology, arsonist profiles (and for some reason a hell of a lot of romance novels, but I’m guessing those aren’t of interest to you).
Points of Origin is not available on Kindle. Fire Lover is and looks very interesting. Attacking the Violent Crime of Arson: A Report on America?s Fire Investigation Units is more like what I am after. It is not available on Kindle. The Psychology of Arson: A Practical Guide to Understanding and Managing Deliberate Firesetters Exactly what I want. It is also $50. Textbooks are a racket. The Arsonist Profiles: Analyzing Arson Motives and Behavior is not available on Kindle. Fire Investigator: Principles and Practice to NFPA 921 and 1033 is $73.
*Fire Cops: On the Case with America’s Arson Investigators * may be worth a look.
Thank you all, Wambaugh, a well-know author seems the best bet.