Originally published as the author's doctoral thesis (London, 1965), a revised edition was reissued in the Garland series: "Outstanding Dissertations in the Fine Arts". Preliminary materials include a biographical essay and a discussion of the drawings in relation to Rosa's life and work. The author studied ca. 900 drawings, many at first hand, and which are reproduced here, as well as those paintings related to the drawings. The author notes that methods and criteria for attribution are complicated by a lack of information on Rosa's early works and problems of misattribution.