Hello. My Mother's cousin was was a Sergeant Air Gunner in the 210 Squadron RAF. He was killed in action with a U-Boat (so we were told) on May 30, 1943. His name was Harold Roper (age 21). I have looked for the book "To the Ends of the Earth - 210 Squadron's Catalina Years" but it is out of print and no copies appear to be available. Any additional details would be appreciated to complete the story. Thanks.