Was Raymond Gosling supervised by Rosalind Franklin?
Well, according to this editorial in Nature:


  Next week marks the 60th anniversary of the publication of the famous Watson and Crick paper — and that of two other papers on DNA that appeared in the same issue. Neither was so high profile, but each was essential to the structure’s discovery. Both were written by scientists at King’s College London: one by Maurice Wilkins and his colleagues Alec Stokes and Herbert Wilson, and the other by Gosling and his PhD supervisor, Rosalind Franklin. (emphasis mine)


There is also a podcast, an interview with Gosling himself (at the age of 86)! The full podcast can be found here: http://www.nature.com/nature/podcast/index-pastcast-2013-04-18.html

Source: Nature 496, 270 (18 April 2013) doi:10.1038/496270a