This is a drawing of an architectural floor plan. The drawing shows a detailed layout of a symmetrical building design labeled as "Scheme A" for the National Gallery in Washington, D.C. The plan includes the dimensions and arrangement of rooms around central courtyards or rotundas, with precise measurements for various sections. The building is flanked by streets, with Constitution Avenue and Pennsylvania Avenue marked on either side, showing its placement within a city grid. The drawing is technical in nature, marked with scales and additional notes indicating dimensions and proposed layout, attributed to architect John Russell Pope.