The following information is taken from the tombstone of C. Avery Hansen, MD.He and his wife Alta are buried in the Mount Vernon Cemetery.First set of numbers is the section and lot numbers and the second is his year of birth with the third being his year of death.The final numbers in brackets is the burial date.
006-158-01Hansen, C. Avery, M.D. 1872 1948[20 Dec 1948] 006-158-02Hansen, Alta C. 1874 1949[31 Jul 1949] Unfortunately obituaries are difficult to come by in the Mount Vernon papers.It is possible you may find an obit by contacting the Washington State Library in Olympia, Wa. at the following website http://www.secstate.wa.gov/library/http://www.secstate.wa.gov/library/
The localGenealogical Society has copies of all funeral home records available during that time frame.I did not find anything for Alto, but there is a funeral home record available for C. Avery, MD.You can email@example.com obtain a copy of this.There will be a small charge since this thru the society.