Hi Bob:

Did you try the looking at the Family History Center website
(the Mormons, LDS), for birth records in Oregon, for there children? They might have it on Microfilm, you can order the film at your local Center (after looking up the film number on their website). Are you looking just for there Decendants? If so maybe try anywho.com or switchboard.com if there are and Tropfenbaum listed you can hopefully get there addresses through these site, and just write letters asking if they are related. I've done that myself, and you'd be amazed at how nice people are in responding, make sure you put your Email address in the letter.

If you need the LDS site address just let me know.

Best of luck
Sharon