[Mike Bates]

"Interviews include journalist Walter Cronkite, correspondent Helen Thomas, former White House aide Jack Valenti, and both of Johnson's daughters, Lynda Byrd and Luci Baines." (From http://www.southcoasttoday.com/daily/08-00/08-18-00/b05li102.htm).

I recall that Lyndon was very much into the LBJ thing, including having a dog named Little Beagle Johnson.

No, there's no making that stuff up. :)

[GraceCoolidge]

Yes, you are right. "Lady Bird" was a nickname, but the daughter's name really was "Byrd." "Baines" was the maiden name of Lyndon Johnson's mother, Rebecca Baines Johnson. I'm not making this stuff up!