Hi Wendy & Richard, La Verne W. Guthrie was living with his family in Ascot Acres, Multnomah Co., OR in 1930. Lester A. head household, 26; Pearl V., wife, 25; La Verne W., 7; Donald K. 5; Ernest C., 3; and Ronald D. 3/12ths.
The Censuses available for viewing at this date end with the 1930 Census. You must know that he lived in Marion Co. so you might be able to find more about him or his family through the Willamette Valley Gen. Soc., http://oregon.gov/OSL/GRES/genealogy.shtmlhttp://oregon.gov/OSL/GRES/genealogy.shtml. Most Gen. Soc.'s do research for a reasonable rate.
A Lavern Guthrie's last residence was Aurora, Marion Co., OR. He was b. 28 Aug 1922. His last benefit check was mailed to Yuma, Yuma Co., AZ. He d. March 1987. His soc. sec. # was assigned in OR before 1951. Source: Social Security Death Index which anyone can access at no cost.
You can learn more about him by finding his obituary. Assuming one was published in Marion Co., check out University Oregon http://libweb.uoregon.edu/general/gethelp.htmlhttp://libweb.uoregon.edu/general/gethelp.html or OR Library System, www.oregonlibraries.net/. I don't know how to access obits in AZ. Successful Hunting!