McCLELLAN'S, June 20, 1862-10 p.m.
Send Prof. [G. C.] Schaeffer to these headquarters immediately, with all the notes and memoranda he collected for Colonel Macomb concerning the Mattapony, Pamunkey, James, Appomattox, and Elizabeth Rivers; also his notes about the Fredericksburg, West Point, Danville, Petersburg, and Norfolk Railroads. If necessary, send him by a special boat. Tell him to be careful to bring everything; also any books and reports containing the information.
By order of Major-General McClellan:
A. A. HUMPHREYS,
McCLELLAN'S HEADQUARTERS, June 20, 1862-10 p.m.
President Philadelphia and Baltimore Railroad, Philadelphia:
Will you please send me by telegraph in cipher, and also by mail at once, all the information you have in regard to the bridges on the Charlottesville and Lynchburg, Richmond and Danville, Lynchburg and Burkesville, Richmond and Petersburg, and Seaboard and Roanoke Railroads, giving the heights, length, and nature of the structures.
GEO. B. McCLELLAN,
*Further correspondence in reference to Captains Sprigg and Triplett will appear in Series II.