Copyrighted by S.J. Jorgensen, 1938; many black and white illustrations; very interesting and humorous to look at today; very good condition; see pics.
"Nationally Famous Instructor and Author on American Jiu Jitsu".
"This course in Official Police Jiu Jitsu is cpyrighted by Office S. Ja. Jorgensen, Police Jiu Jitsu Instructor of the Seattle Police Department for many years. It deals primarily wih the Shake Down of genmen and dangerous armed criminals on foot and in cars..."