DNA structure
Rosalind
Franklin
Inspired by Pauling's success in
working with molecular models,
Watson and Crick rapidly put
together several models of DNA
and attempted to incorporate all
the evidence they could gather.
Franklin's excellent X-ray
photographs, to which they had
gained access without her
permission, were critical to the
correct solution. The four
scientists announced the
structure of DNA in articles that
appeared together in the same
issue of Nature.
The famous  Photo 51
showing the x-ray
diffraction of wet DNA as
an alpha helix.