Works Cited: Oscars Edition

Caroline Jones, Reference Archivist

Works Cited is a series showcasing publications and other products of research where the creator used collections housed at the Texas State Library and Archives Commission (TSLAC). We trace citations and pull sources from the stacks for a look at the original. Explore publications with a TSLAC connection by visiting Titles that cite TSLAC Collections under Newly Added Titles in our library catalog.


The movie Killers of the Flower Moon, based on the book, Killers of the Flower Moon: The Osage Murders and the Birth of the FBI by David Grann, was nominated in multiple categories, including Best Picture, at this year’s Academy Awards. The work tells the story of the “Reign of Terror” against the Osage in 1920s Oklahoma and its lasting effect. The author conducted research in libraries and archives to find information and develop the story of this episode in American history. The Texas State Library and Archives Commission is named among the many “Archival and Unpublished Sources” listed in the back pages of his book.

The 2023 film, Killers of the Flower Moon was based on this book by David Grann, Killers of the Flower Moon: The Osage Murders and the Birth of the FBI, 2017. TSLAC Main 976.6004 G766k.

Unlike the film, the publication focuses more on Tom White, the agent sent to investigate the situation in Oklahoma. Given that White was a former Texas Ranger, Grann’s research included TSLAC archival records from the the Texas Adjutant General Department, a rich resource in ranger history. In his notes section, Grann cites two archival documents at TSLAC:

148 “proved an excellent”: Adjutant General to Tom Ross, Feb. 10, 1909

149 “One wagon sheet”: Adjutant General to J. D. Fortenberry, Aug. 1, 1918

What exactly did the Adjutant General write to Tom Ross and J.D. Fortenberry? I conducted a little research of my own to find out.


TSLAC holds many collections of records created by the Texas Adjutant General’s Department, including correspondence, military rolls, Texas Ranger records, and more. To locate the two items, I narrowed my search by the year and used context clues in the text. The sources are cited in chapter 13, “A Hangman’s Son,” which discusses the life of Tom Bruce White, the Federal Bureau of Investigation (FBI) agent investigating the Osage murders.

Based on the dates and the context of the documents, the most likely places to search would be the Texas Adjutant General’s Department Ranger records and the Texas Adjutant General’s Department departmental correspondence. After striking out in the Ranger records, I quickly located the 1918 document in the departmental correspondence. But after repeatedly searching correspondence dated February 8 to February 15, 1909, none of the text was matching the quotations used in the book. Since items may sometimes become misfiled, especially in heavily used collections like this one, I reviewed the whole month of February.

When I discovered the correct document, the issue may have been with the type on the page. The letter with the cited text was actually dated February 19, not 10.

close up of date on letter of feb. 19,1909.

Below is the letter cited where the Texas Adjutant General writes to White’s captain, Tom Ross, saying that White had “proved an excellent officer” and he would “regret to see him quit the service.” (Click the image for larger view.)

Image of letter dated feb. 19,1909  from adjutant general to capt Tom Ross that was cited by David Grann.
Cited document, 148 “proved an excellent”: Adjutant General to Tom Ross, Feb. 10, 1909 in, Killers of the Flower Moon: The Osage Murders and the Birth of the FBI. Adjutant General to Captain Tom Ross, February 19, 1909, Correspondence, Texas Adjutant General’s Department departmental correspondence.

As noted earlier, prior to joining the FBI, White had served as a Texas Ranger. The 1909 document cited is used in describing White leaving the rangers. The passage on page 148 of Killers reads, “Tom decided to leave the Rangers altogether and marry Bessie. The adjutant general wrote to Tom’s captain, saying that Tom had ‘proved an excellent officer’ and that he would ‘regret to see him quit the service.’”

The 1918 document is quoted to describe the supplies used to transport the body of Dudley White, Tom’s brother, back to his family after he died in a shootout between Texas Rangers and deserters. Grann notes the matter-of-fact way this particular document is written. On page 149 of Killers he writes, “A Ranger report noted clinically, ‘One wagon sheet, one bed sheet, one pillow, used in shipping Ranger White’s body.’” (Click image for larger view.)

Image of letter dated August 1st, 1918 to Dr. J.C. Fortenberry itemizing cost of carrying Ranger White's body for shipment.
Cited document, 149 “One wagon sheet”: Adjutant General to J. D. Fortenberry, Aug. 1, 1918, in Killers of the Flower Moon: The Osage Murders and the Birth of the FBI. Adjutant General to Dr. J.C. Fortenberry, August 1, 1918, Correspondence, Texas Adjutant General’s Department departmental correspondence.

Tracing citations back to their original sources can add insight and context to the author’s work. The process is also a way to teach students and others how to fact-check and learn how to use primary sources in research and writing. Archival collections are preserved to help us understand the events of the past and provide the evidence for artists, writers, scholars, journalists, documentarians, and others to turn them into stories.

In addition to these archival materials, some of the publications Grann cited in Killers are housed in our library collections. Subjects include Texas government, the Texas Rangers, Tom White, and the cattle industry. A few of these publications are shown below.

photo of stack of five books with spines visible. From top to bottom, they are Policing the Great Plains, Texas Devils, Time of the Rangers, KiIllers of the Flower Moon, and Tom White: The Life of a Lawman.

More information about these publications can be found in our library catalog:


To search for these books and more, visit our library catalog. The library catalog includes a list of Titles that cite TSLAC Collections under Newly Added Titles. If you are interested in checking out a title from this post, please visit the Reference Desk or contact your local library about borrowing books through the interlibrary loan program. Call us at 512-463-5455 or send an email to ref@tsl.texas.gov with your questions about our archival and library collections.


All images herein were produced in-house, feature items in TSLAC’s library and archives collections, and are used for educational purposes.

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