Statistics for occurrence #1 of “Mr. J. P. Wainwright” in chapter 6 of William Schouler, A history of Massachusetts in the Civil War: Volume 1:

...either in the field, or at the camps at home, before the men were sent forward. The Legislature of Massachusetts passed an act, March 11, 1862, to carry out more perfectly the system of payments. Mr. J. P. Wainwright , as a volunteer agent of the commissioners, aided in getting the soldiers to make allotments, and, in the fulfilment of this work, visited the Massachusetts regiments in the Department of the Gulf. ...
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