surveyed by Lieut's Janney and Kossak ; under the direction of Lieut. Col. J.B. McPherson, Chief Eng'r ; drawn by Otto H. Matz, Ass't Top'l Eng'r. Matz, Otto H., 1830-1919. CREATED/PUBLISHED  NOTES Shows the fort, town of Dover, fortifications, 'Enemies' tents', 'Enemies' log huts', woods, and areas of fallen timber. Relief shown by hachures and form lines. Includes index of outworks ('Explanations') and 3 fortification profiles at left border.