Mississippi River from Cairo Ill. to St. Marys Mo. in VI sheets. Reconnaissance for the use of the Mississippi Squadron under command of Acting Rear Admiral S.P. Lee, U.S.N. By the party of F.H. Gerdes, Assistant, assigned by A.D. Bache, Supdt. United StaUnited States Coast Survey1865"F. H. Gerdes, Asst. Coast Survey, Chief of Party. A.T. Mosman, Sub asst. in charge of astronomical observations. T.C. Bowie, Sub Asst. in charge of topography. F.W. Perkins, Aid. J.B. Adamson, Aid & Draughtsman."Description derived from published bibliography.cartographic