Professor Knox has, on the basis of a photograph, confirmed the attribution. Some 75 drawings of the Holy Family from the Owen-Saville Album, like the present study, are known. George Knox dates the series 1754-62 and described them as 'the most magnificently sustained testimony to Giambattista's graphic inventiveness', J. Byam Shaw and G. Knox, The Robert Lehman Collection, VI, Italian Eighteenth-Century Drawings, New York, 1987, no. 93