Dear Mr. Duke,
Thank you for posting your request on History Hub!
Basic training yearbooks were not permanent records and as such were not transferred to the National Archives. Some basic training yearbooks may be found through online searches in various library collections, websites, and book retailers. However, we are unaware of any single, comprehensive collection of such yearbooks. You may wish to contact the Ft. Chaffee Joint Maneuver Training Center as well as public and university libraries and historical societies in the area of the fort.
We hope this information is helpful. Best of luck with your research!