Watson and Crick shared the Nobel Prize with M. H. F. Wilkins (No. 256.4) "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material." Later they proposed how DNA might explain the chemical mechanism by which cells passed on their character accurately. See No. 7138.

The journal Nature later published an "early draft" of the Watson & Crick paper with differing text and extensive explanatory annotations. It is available from exploratorium.edu at this link.

In this paper published on May 30, 1953 Watson and Crick proposed the method of replication of DNA. This discovery has been called as significant, or possibly even more significant, than their discovery of the double-helical structure of DNA published in April 1953. 

Watson's first book on molecular biology, and the first textbook on what was then a new academic subject. Seventh revised edition, with five co-authors, 2013.

Expanded edition, 1992. 40th anniversary edition, 2007.

Vivid first hand account of the discovery, renowned for its candor. See also the Norton Critical Edition of The double helix with supporting material, edited by Gunther Stent (1980), and The annotated and illustrated Double Helix, edited by Alexander Gann & Jan Witkowski (2012).

Portions of Watson's famous memoir appeared in the January and February issues of the Atlantic Monthly prior to their publication in book form in the Spring of 1968.

(Thanks to Juan Weiss for this reference.)