David Ashbaugh also wrote and published a fundamental and essential reference book for the entire forensic identification community : Quantitative-Qualitative Friction Ridge Analysis: An Introduction to Basic and Advanced Ridgeology.
During his career, he served more than twenty years as a certified forensic identification specialist.
During his career, he contribute numerous articles to the field magazines and journals and made a lot of training around the world.
[1] David Ashbaugh made extensive research on the science of fingerprint identification.
[4] In 1999, he authored a book treating of ridgeology methods, poroscopy, edgeoscopy, pressure distortion, and more.