From https://familysearch.org/ark:/61903/1:1:VPD6-X62

Wallace John Christian
Death
10 Jan 1951
San Bernardino, California, United States
09 May 1921
Utah
Male
Christian
Burns

From http://aviation-safety.net/wikibase/wiki.php?id=98670

Date: 10-JAN-1951
Time:
Type: Silhouette image of generic b50 model; specific model in this crash may look slightly different
Boeing B-50D-80-BO Superfortress
Owner/operator: HQ, 3077th EG USAF
Registration: 48-070
C/n / msn: 15879
Fatalities: Fatalities: 8 / Occupants: 8
Other fatalities: 0
Airplane damage: Written off (damaged beyond repair)
Location: 25mi SE of Edwards AFB, CA -   United States of America
Phase: Approach
Nature: Military
Departure airport: Edwards AFB, CA
Destination airport: Edwards AFB, CA
Narrative:

The B-50D struck a peak of the Shadow Mountains while flying at 4,000 feet in low cloud cover on approach to Edwards AFB after a four and a half hour equipment test mission for Ryan Aeronautical. All six USAF crewmen and two civilians (Ryan test engineers) aboard were killed: Pilot Capt. William Alexander Bailey, Jr., co-pilot Maj. Gordon L. Payne, Jr., M/Sgt. Robert E. Methusa, M/Sgt. Lilburn N. Cate, T/Sgt. James H. Willingham, T/Sgt. Carl A. Milhoan, Charles A. White and Wallace J. Christian.

Sources:
http://www.aviationarchaeology.com/src/db.asp
http://www.joebaugher.com/usaf_serials/usafserials.html
http://www.donrjordan.com/shadow_mountain_b50d.html