Typewritten mimeo report on three 8x14" paper pages, both sides. From the Operational Research Section (AEAF) titled "Radar Aids to the Bombing of 'Noball' Targets"., Report 9, Copy 39. Each page marked "TOP SECRET". The report assess possible damage by radar bombing using Mopsquitoes, Mitchells and Sterlings. Apprndix A: "Calculation of Damage by Mosquitoes and Mitchells; Appendix B: "Calculation of Damage by Bomber Command Night Attacks". Pages are stapled with a single punched hole nearby. Generally good +.