Here are three types of sources that have proved to be insightful in my research
Newspapers:
Newspaper articles from the time of the discovery were very straight forward, with the story being presented with only Watson and Crick receiving credit. These clippings come long before the real story reaches the media.
Letters:
A letter that I found was the letter nominating Watson and Crick for the Nobel Prize. This is hard to read, with Franklin given absolutely no credit. Knowing that this, and ultimately the nobel prize, is one of the main reasons that she was left out of the equation for so long is troubling.
Circk actually sent a letter to his friend outlining the discovery before he wrote his book. This letter gives substantial credit to Rosalind Franklin is the main source of proof of what she did. I have been having a terrible time finding this letter however. I have found many articles talking about it, but am still looking for a copy of it that I can read for myself.
Textbooks:
As my argument evolves more to critique her portrayal in modern textbooks rather than talking about her at all, I will be using these textbooks as primary sources. I have found textbooks online as well as those used at USC in Biology courses. What they have shown me is that Rosalind Franklin is continually outlined as a controversy, or a side note to the story about Watson and Crick. If she is present in the book, she is given a sidebar as an add-on to the information, rather than being presented as facts

