Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Lee's Dispatches: Unpublished Letters of General Robert E. Lee, CSA, to Jefferson Davis and the War Department of the Confederate States of America, 1862-65
Non-auditory effects of noise(Analysis of nonauditory effects of noise on task performance, cardiovascular system, and general health of human subjects)