Email Record: Jefferson-Shreveport Waterway. Letter from the Acting Secretary of War, transmitting, with a letter from the Chief of Engineers, report on preliminary examination and survey for a lock in the proposed dam at the foot of Caddo Lake, La. and Tex., and a channel from said dam to the Red River by way of Big Pass, Little Pass, Soda Lake, Twelvemile Bayou, and Cross Bayou.