Carta de J. Billington, The Librairian of Congress, Washington D. C.
«Dear Jacques, (…)
In response to your concern for finding a position as a Visiting Professor beginning next fall, I would be happy to write on your behalf, if you will send me a list of the institutions that interest you and the name of the person to contact.(…)Â
Sincerely,
James H. Billington
March 1, 1991.