HIS 100 Theme 2: Secondary Source Analysis WorksheetPrompt: Fill in each of the fields below using information from a secondary source of your choice. Be sure to include specific examples (page numbers, etc.).Full APA citation:Walker, J. S. (2005). Recent literature on Truman’s atomic bomb decision: A search for middle ground. DiplomaticHistory, 29(2), 311–334. Retrieved fromlive&scope=siteIdentify author anddescribe potential biases.J. Samuel Walker is an American historian and author based in Maryland, most notable for his research and writing on thenuclear age, both weaponry and atomic energy.Walker was a history instructor at theUniversity of Marylandin the mid-seventies and was hired by theNuclear Regulatory Commission(NRC) in June, 1979, working under the chief historian,George T. Mazuzan.Walker truly went into writing this essay with an open mind about why the bomb was used, what theconsiderations were, and, most of all, what the context was in the summer of 1945.