The post-1461 dating argued by Mack for the Rucellai Palace's exterior raises once more the question of authorship. Based upon the word of Vasari and some other mid- to late-sixteenth century comments, as well as upon Giovanni Rucellai's known use of Leon Battista Alberti as the architect of his chapel in the neighboring church of San Pancrazio and for the completion of the facade of Santa Maria Novella, the humanist scholar and artistic theoretician generally has been accepted as responsible for designed the Rucellai Palace's facade. However, the first comments on the facade, made in the early sixteenth century, do not mention Alberti, but rather link it to Bernardo Rossellino by saying that he had made "the model for the palace." That might mean that he was responsible for the actual design of the facade or simply that he had furnished a model following someone else's directions, perhaps Alberti's.