In January 1947, the MRES (Missing Research and Enquiry Service) reported on the loss of the Robertson crew. In this, the German witnesses give a slightly different account from the accounts which were gathered many years later which can be seen on this page: ROBERTSON CREW LOSS – GERMAN CIVILIAN REPORTS
MRES Report from the J10302 Oliver Brock Robertson service record in the Canadian National Archives, reference: FILE/DOSSIER : J10302 Oliver Brock Robertson, REFERENCE NUMBER / NUMÉRO DE RÉFÉRENCE: Service Number J10302 D.F.C.Reference number R112, Volume 30719 Item number 39587.