This is probably not our Langdon since he exists in earlier censuses.
Social Security Death Index
about Horace McFarland
Name: Horace McFarland
SSN: 478-22-0397
Last Residence: 50276 Woodward, Dallas, Iowa, United States of America
Born: 6 Apr 1906
Died: Jun 1971
State (Year) SSN issued: Iowa (Before 1951)