I am curious if my father is still alive. I haven't been able to locate an obit, and the last known address that I have was in WA. Letters to that address were returned "Attempted Not Known" by the Post Office. He left our family when I was two and forty years later, on Fathers Day, I wonder if he has passed on. I know he lived with his brother in WA, and I believe I have a half-sister somewhere out there. I was born in CA, but I know he had family in the Southern US (Arkansas, maybe, but that's just a guess). He went by the nickname "Red," hobbied with remote-controlled planes and was tall and thin with red hair. He'd be in his early 70's, I believe. Thank you in advance for your help.