He actually died in Eureka, California and that information is in the online California Death Index: DANIELSONMILTONA(b)08/15/1917 (mother's maiden name) WOOSTER(father's surname) DANIELSON(sex)M(birth place) NORTH DAKOTA(place of death)HUMBOLDT County (d)11/06/1946532-07-7170(age)29 yrs
I also found a Sherman Danielson in the SSDI, whose last residence was North Dakota (where Milton was born) and whose SS card was issued in Washington where the family lived. This Sherman might be Milton's father. SHERMAN W DANIELSON(b)03 May 1896 (d)01 Aug 1994 (Minot, Ward, ND) 532-07-7169 Washington
You could ask a volunteer for Ward County, ND at www.raogk.org. They often look up obituaries.
Best wishes in your research; it's nice to know that an obituary I posted helped someone. Thanks for your kinds words.