On the heights of the peninsula of Charlestown, the 17th June 1775. [By] Iohn Humfrey. Humfrey, John, 18th cent. CREATED/PUBLISHED 1775. NOTES Scale ca. 1:13,800. Manuscript, pen-and-ink and watercolor. Has watermark. Relief shown pictorially and by shading. Shows troop movements. Includes 'Explanation,' an index to troops and points of military interest.