I have located some photos in the Churchill archive at Cambridge taken by Lt RWA Ivermee, RAF, showing HM Monitor M25 in the Dvina river during the Archangel operations in 1919. My wife's grandfather was serving on her at the time. The archive say that copyright is probably held by Lt Ivermee's descendants or heirs, but they have no trace of them. Is anyone who might read this related? What I would like is consent to get the photos scanned, purely for personal use.