The are pictured in front of the Southern Minerals headquarters at 411 N Upper Broadway in Corpus Christi (known as the Britton-Evans or Centennial House). It was the company headquarters from 1936-54. You can see a good view of the door here:…
Garth Pitcairn, Nathan Pitcairn, Kesniel C. Acton, Michael Pitcairn, Raymond Pitcairn (above), Lachlan Pitcairn, Maston Nixon, Marlin Heilman, John P. Pitcairn at the airport