Plan showing proposed method of laying out the public grounds at Washington /

Covers The Mall between Capitol grounds and 17th St. N.W.Also covers adjacent areas including "Parade or President's Park," White House grounds, future Federal Triangle, and Washington Canal.At foot of title: February 1851.Oriented with north toward the lower right.Pen-and-ink, blue watercolor, and [lead?] pencil.Faded, soiled, varnished [?], and cracked.Originally drawn on 2 sheets.Includes bar scale in feet (2,000) and greatly faded text with personal signature at lower left.In wooden frame 140 x 199 cm