I am seeking information on how to go about finding a birth record for a male child (first name unkown) born to a Mr. and Mrs. J.W. Thompson, 5,July 1926 in Silverton Oregon. This child may be my birth father who was given by his motherto a couple by the name of Howard and Rosabelle Allender sometime between 1926 and 1930 by his mother. This information was gleened from the guardianship papers I obtained when my father was going into the military.I found my birth father about 15 years ago just before he died and he had no information on his real parents.All I have is a last name and date of birth. Anyone information concerning where to search for this birth record would be greatly appreciated.