Photographic print of a DNA X-ray diffraction pattern image known as Photo 51 with annotations by Raymond Gosling (1926-2015). The original image was made by Rosalind Franklin (1920-1958) and her student, Gosling, at King’s College London in 1952 and it was published in their 1953 Nature article “Molecular Configuration in Sodium Thymonucleate” alongside the article in which James D. Watson (1928-) and Francis Crick (1916-2004) proposed the double-helix structure of DNA. The photo contains one annotation on the reverse and is signed by Gosling. A pencil inscription reads “Print of Original Structure B - only. Best pattern obtained 52/53. Made around '53 R.G. Gosling”