Hi my Grandfather was named Oscar Dahl. He was from Rosoe, MN and born in 1907 he served in WWII in the army and lived in California after that neer Sacromento where my mother was born. Lola Mae Dahl. My grandmothers name was Agnes I do know she was his second wife also from MN. He passed away in the early 90's. I don't know if this helps or is the same person but let me know, I am interested myself.

Thanks,
Jason Guinn