Hi Judy, In 1920 James and Virginia were living in Seattle, King Co., WA. James Culbertson, b. WI, 39, carpenter sleuter? boat. Virginia M., wife, b. France, 36, immigration date unknown.
In 1930 they were living in Eugene, Lane Co., OR James M. Culbertson, b. WI, 53, marr @ 34, proprietor Lane hotel. Virginia M., b. France, 48, immigrated 1880, naturalized 1882, marr @ 31.
The 1940 Census will be released to the public in 2012 but who knows how long it will take to index it. Therefore, there is not more information about them until their obituaries.
James DID die in Clatsop Co., 30 Sept. 1958.
However the information regarding Virginia isn't so cut and dried. A Virginia Culbertson Born: 6 July 1877, France Died: 27 Feb 1964, Contra Costa Co., CA Mother's Maiden Name: Rambeau Source: California Death Index 1940-97.
A Virginia Culbertson Age: 86 Died: 27 Feb 1964 Certificate: OS [out of state?] Source: Oregon Death Index 1903-98.
A Virginia Culbertson Born: 6 July 1877 Last Residence: Oregon Died: Feb. 1964 Her soc. sec. # was assigned in Oregon before 1951. Source: Social Security Death Index.
I'd looked for James' obituary in Clatsop Co. There is an obituary volunteer at Random Acts Genealogical Kindness. Go to raogk.org Choose Oregon Click on A thru D Scroll down to Clatsop Co. and choose Jessica. Ask her to look up one for Virginia too.
If that doesn't work out, I'd contact the Astoria Public Library, 450 Tenth St., Astoria, OR 97103, 503-325-7323. Successful Searching!