; (48) thence east along said southern right-of-way of H Street NW to its intersection with the northwest corner of the property designated as Square 221 Lot 35; (49) thence counter-clockwise around the boundary of said property designated as Square 221 Lot 35 to its southeast corner, which is along the boundary of the property designated as Square 221 Lot 37; (50) thence counter-clockwise around the boundary of said property designated as Square 221 Lot 37 to its southwest corner, which it shares with the property designated as Square 221 Lot 818; (51) thence south along the boundary of said property designated as Square 221 Lot 818 to its southwest corner, which it shares with the property designated as Square 221 Lot 40; (52) thence south along the boundary of said property designated as Square 221 Lot 40 to its southwest corner; (53) thence east along the southern border of said property designated as Square 221 Lot 40 to its intersection with the northwest corner of the property designated as Square 221 Lot 820; (54) thence south along the western boundary of said property designated as Square 221 Lot 820 to its southwest corner, which it shares with the property designated as Square 221 Lot 39; (55) thence south along the western boundary of said property designated as Square 221 Lot 39 to its southwest corner, which is along the northern right-of-way of Pennsylvania Avenue NW; (56) thence east along said northern right-of-way of Pennsylvania Avenue NW to its intersection with the western right-of-way of 15th Street NW; (57) thence south along said western right-of-way of 15th Street NW to its intersection with a line extending northwest from the southern right-of-way of the portion of Pennsylvania Avenue NW north of Pershing Square