In many of these sources, the authors attributed various paintings, which are now known to be by different authors, to Josefa. Beginning in 1949, art historians began to more critically evaluate her body of work; in an exhibition held in the Museu Nacional de Arte Antiga (Lisbon), curators assembled a list of fifty-three works that could definitively be declared autograph. In 1957, Luis Reis-Santo produced the first monograph on Josefa's work, expanding on her known oeuvre.
