Here is a link to a French Web site that has historical photos and information regarding Brantlys.
Following is an article on how the Brantly B-2 was the very first helicopter to be used in police work in the UK. Many interesting pictures.
This site has a picture of a Brantly used in police work in the UK and discusses the use of helicopters in police work.
Following is a biography of Newby Odell Brantly, the founder of Branlty Helicopters.