National Geographic : 1923 Jun
©Harris and Ewing TREE-BOWERED NEW HAMPSHIRE AVENUE NORTH FROM DUPONT CIRCLE Beautiful American elms, such as these, will be planted more profusely in the future in the Capital. Washington already has the largest per capita street tree population of any American city. If its 105,889 street trees were planted at the customary interval on anorth-bound highway the motorist would have a tree-shaded boulevard well beyond New York. This number, of course, does not include thethousands oftrees inparks, squares, circles, and gardens.