Hi Patty. In Oslo there are cencus' from 1865, 1875 and 1900 available. But what are you actually looking for - and who are this/theese person(s - three brothers?)?
Haw many Hans Hansens and Carl Hansens there were in Oslo in the 1900 cencus I didn't bother to look up - too many anyway. But there are "only" 9 Helmer Hansens in it. If one of them could be the one you're looking for is not possible to say as you give absolutely no additional information. Neither any age estimate from 1884/85, no date for going to America, no...
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