Landing Area Circle Marker
I am trying to track down the history of the large white circle seen in old airfield photos. US Forest Service strips have them still.
I understand that it was used to designate a 'field', that looked like any other farmer's field, as a designated air-field. I have seen a reference to the September 1932 "Airway Bulletin No.1 'General Airway Information'" publication. I have seen portions of the manual at oldbeacon.com. but they don't satisfy my curiosity.
Does anyone have a copy of this government pub?