September 30, 1967.
"We were due to have a family picture made at 11 A.M. today—an event I always approach as an ordeal because it falls to my lot to try to get everybody in the humor…
"We took our seats on the orange sofa in the den….Patrick Lyndon screwed up his face and let out a yell. Everybody went into gyrations trying to amuse him. Luci went for a bottle of milk, and then there followed one of the most hilarious scenes of my lifetime. Lyndon gave Okie instructions on how to shoot the picture, then he stuck the bottle of milk in Lyn’s mouth for a long suck, snatched it out and put it quickly behind my back while we all composed our faces into hopefully appropriate expressions and Okie snapped. This went on time after time, with little Lyn getting madder and madder, hollering louder and louder, and I melting into laughter between snaps until the tears rolled down my cheeks…. And Lyndon looked like the frustrated captain who can’t make his team play right.”
Lady Bird Johnson A White House Diary, New York: Dell Books, 1971, pg 571-572. LBJ Presidential Library contact sheet 1967-09-30-C6787, public domain.