Barb, thank for your efforts! I suspect....
...the reason you didn't find them in the 1900 census was that their last name was spelled "Dahlgreen" (unless you used a Soundex type index)
comments powered by
That's how they are listed in the 1920 and 1930 census.
I had pretty much all of the information except for the 1910 census info.You are a good researcher.