Dear Ms. Zoeller,
Thank you for posting your request on History Hub!
National Archives staff believes that “orp” stands for “orphan,” but we have never seen any record that definitely states that this was the intention of the census taker. The fact that adoptions are sometimes noted in the roll and the nature of the roll itself also seem to indicate that “orphan” may be meant by “orp.” This roll was taken because the government was found by the courts to owe the Cherokee money from all the broken treaties, so respondents would list all relatives and other individuals who connected them to the Cherokee who were removed, including orphans who may not have been related by blood.
You can learn more about the Guion Miller Roll, 1906 - 1911 and the Guion Miller Roll Index on our website. You may also wish to review the series description for the Guion Miller Report and Exhibits, 1908-1910 in the National Archives Catalog. These records are part of the Records of the Bureau of Indian Affairs (Record Group 75), and some have been digitized and can be viewed online in the Catalog. Please contact the National Archives at Washington, DC - Textual Reference (RDT1) at email@example.com for more information about these records.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this information is helpful. Best of luck with your research!