{"value"=>"<p>Gettysburg materials consist of original returns, tabular abstracts, and miscellaneous documents relating to the USSC’s investigations into the influence of long marches during the months of June and July 1863 on the health of troops before, during and after the battle of Gettysburg (July 1-3, 1863).</p> <p>As in the Bull Run investigations, USSC inspectors were given printed questionnaires (here Form J) to record responses from interviews with regimental officers and surgeons during post-battle relief and inspection work. Original returns for the one hundred and forty four regiments reviewed, dating 1863 Sep-1864 Feb, are present here. Related undated Form J materials include a bound set of oversize table abstracting the responses from the one hundred and forty four returns in tabular form, and an oversize tabular abstract of returns #1-49 prepared by inspector W.F. Swalm, M.D. Also present are a set of oversize tables abstracting information from Form J-1 (original returns not located), and Form J-2 returns, 1863 Aug-1864 Jan and undated. Forms J-1 and J-2 themselves were used to abstract information from records of regimental adjutants and regimental surgeons, respectively.</p> <p>Miscellaneous documents, 1863-1865, consist of letters, working reports, and battle returns concerning loss and gain at Gettysburg, particularly the analysis of Form J materials.</p> <p>A description of the investigation and related Statistical Bureau work is found in Benjamin Apthorp Gould’s Investigations in the military and anthropological statistics of American soldiers, Chapter XVI.4 (pp. 603-610), Effect of Long Marches.</p>"}