Dear Mr. Tashiro,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 15 record series of photographs in the Records of the War Relocation Authority (Record Group 210). Of these 15 series, photographs specific to the Colorado River Relocation Center are located in the record series Colorado River Relocation Center, 1942 - 1945; Local Photographic Files of Relocation Centers, 1942 - 1946; and the Central Photographic File of the War Relocation Authority, 1942 - 1945. Plus, Granada Relocation Center, 1943 - 1945; Local Photographic Files of Relocation Centers, 1942 - 1946; and the Central Photographic File of the War Relocation Authority, 1942 - 1945 includes photographs specific to the relocation center also known as Camp Amache. Many of these records have been digitized and are available online through the Catalog. For more information about non-digitized records, please contact the National Archives at College Park - Still Pictures (RDSS) at email@example.com.
We also located War Relocation Center Yearbooks, 1943 - 1945 in Record Group 210 that includes photographs relating to relocation camp schools. These records have not been digitized. For more information about these records, please contact (RDT1) at firstname.lastname@example.org.
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 RDSS and RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
Additionally, you may be interested in the National Archives topic page on Japanese American Internment.
The Library of Congress has a number of materials relating to Japanese American internment, including Ansel Adams's Photographs of Japanese-American Internment at Manzanar. Searching their website for Colorado River Relocation Center generates a number of results. You may wish to contact the Library of Congress via their Ask a Librarian feature for further assistance with their holdings.
Also, the Bancroft Library of the University of California, Berkeley, has a collection of War Relocation Authority Photographs of Japanese-American Evacuation and Resettlement.
We hope this is helpful. Best of luck with your research!