This paper reports Franklin's discovery of the existence of DNA in 2 forms, and conditions for readily and rapidly changing from one to the other. Its phosphates were on the outside.” (Maddox 195)  The Watson-Crick model of the double helix was in large part derived from her work. The striking Photo 51 of the B form of DNA that was influential in convincing Watson that the form was helical, appeared as an illustration to her and Gosling’s paper, with no suggestion that Watson had seen it, let alone been inspired by it. She appended also her comment that the photograph ‘is strongly characteristic . . .of a helical structure. See Maddox, Rosalind Franklin: The Dark Lady of DNA (2002) 211-212)  Various authorities have suggested that it was Rosalind Franklin, rather than Maurice Wilkins, who should have shared the Nobel Prize with Watson and Crick for the discovery of the double-helical structure of DNA; however, Franklin died before the prize was awarded, and the Nobel Prize is not awarded posthumously.