Hi Again
Searched U.S. Social Security Index:
finds 24 BJERKAN deaths in the U.S.A.
California,Colorado,Maryland,Minnesota, Missouri New York
3 in North Dakota
Oklahoma, Oregon.
Perhaps obituaries of family members in North Dakota - may list family members that you are researching. may show locations at that time.
Search online 411.com - for U.S.A. white pages directory.
Cheers, Stella