Many years ago I read in the 'Bucks Examiner' that Glenn Miller's aircraft made an intermediate stop at Bovingdon to pick up anther passenger. I've seen no evidence elsewhere to support this.
The 'Crash Map' I referred to was for the use of the airfield fire service and showed the airfield in great detail together with a grid system for locating 'incidents' in poor visibility.
Sorry it didn't details crashes in the vicinity like you thought!