The best I've read is "The Eighth Day Of Creation" (which is amazing book beyond the part that covers the elucidation of the structure of DNA). He references multiple internal data sources that establish the process by which Gosling's photo made it to Watson and Crick. Of all the accounts I've read, it seems to be the most factual. I think it's also worth reading Watson's account ("The Double Helix") and the book that originally brought the most attention to the treatment of Franklin ("Rosalind Franklin: The Dark Lady of DNA")