Hi Robert, I found Beulah Emily Harrison Walker on the FH Bishop Family Tree, http://trees.ancestry.com/tree/25538047/person/16695599120http://trees.ancestry.com/tree/25538047/person/16695599120. Of course any information found on a Family Tree should be verified before you include it in your database.
Beulah Emily Harrison Walker b. 19 Aug 1896 in Salt Lake City, Salt Lake, UT. Source: above family tree. You can verify this information by requesting a copy of her birth cert from the Utah Division Archives & Records Service, www.archives.state.ut.us/research/guides/birth.htm.
In 1930 Beulah and Charles and family lived in Salt Lake City. Charles L. Walter, b. UT, 29, branch mgr f____ corp. Beulah, wife, b. UT, 32. Connie, dau, b. can't read it, 2 6/12ths. Bary, b. UT, 1 6/12ths.
A Charles Leroy Walker Born: 19 Dec 1900, Peoa, Summit County, UT Died: 2 Sept. 1961, Salt Lake City, UT Buried: 13 Feb. 1961, Salt Lake City Cemetery Source: Sexton Records, Utah Cemetery Inventory.
You can request a copy of his obituary from the Salt Lake City Library call their reference librarian 801-524-8200.
You'll definitely want Beulah's obit since she died more recently than her husband. Hopefully her children will be listed in the obit and where they were living at her death.
Since it appears that the children are still living, I'll send that info to you in an email. Successful Searching!