In The Passion of Ayn Rand, Barbara Branden says that she met Rand in 1981 and wrote Rand a letter thereafter. (PAR, pp. 397-400.)
In The Passion of Ayn Rand’s Critics, James Valliant says that Rand never saw Barbara Branden again after their split. (PARC, p. 94.)
I contacted the Archives of the ARI and they confirm that there is evidence that this meeting took place. Specifically, although the letter mentioned by Barbara Branden was not found, Cynthia Peikoff (who was Rand’s secretary in 1981), mentions the letter and the meeting in the forthcoming 100 Voices: An Oral History of Ayn Rand, by Scott McConnell.
Reference assistance, courtesy the Ayn Rand Archives, A Special Collection of the Ayn Rand Institute.
I thank the Archives for their response.