Mount Vernon Memorial Highway, 108, 117, 296. Mount Vernon Ladies’ Association of the Union, 126. Mullett, A. B., architect, 268, 284. Municipal Center, the, 296. Municipal Fish Wharf, 113. Murphy, Frederick V., architect, 288. National Academy of Sciences, 276. National Capital, the, development of, 13, 105. National Capital Park and Planning Commission, 51, 69, 99, 102, 105, 150, 306. National Cathedral School, 288. National churches in Washington, 289. National Commission of Fine Arts, 95, 99, 102, 105, 150, 161, 296, 315. National Conference on City Planning, 82. National Gallery of Art, 89, 256, 284. National Geographic Society, 277. National Museum, 89, 256, 284. National Park Service, 127, 143, 218. National Shrine of the Immaculate Conception, 288. National Society of the Daughters of the American Revolution, 275. Naval Academy, 319. Naval Hospital, 284, 296. Naval Observatory, 284. Navy Department Building, 296. Noyes, Mrs. Frank B., 163. Octagon House, 81, 173. Oldroyd Collection of Lincolniana, 215. Olmsted, Frederick Law, jr., landscape architect, 82, 87, 163. Page, William Tyler, 209. Palisades of the Potomac, 93. Pan American Union, 276. Park system of the National Capital, 143, 306. Partridge, William T., study of L’Enfant plan by, 25. Patent Office, 42, 48, 197. Peaslee, Horace W., architect, 333, 343. Pennsylvania Avenue, 37, 145, 299. Pennsylvania Railroad Co., 84. Pension Office Building, old, 284. Perry, Hinton R., sculptor, 284. Piccirilli Brothers, marble cutters, 133. Platt, Charles A., architect, 284. Polk, President James K., 51. Pope, John Russell, architect, 257, 275, 277, 284. Porter, Commodore, owner of Meridian Hill Park site, 159. Post Office Department Building, 48, 284. Potomac Parks, 131, 155. Presidents of the United States, list of, 355. Proctor, A. Phimister, sculptor, 284. Public Buildings Act of 1926, 296, 299, 301. Public Buildings Commission, 293, 301. Public Buildings Program, 293. Public Health Service Building, 276. Public Library, 284. Pulaski, Gen. Casimir, statue of, 331. Putnam, Herbert, Librarian of Congress, 252. Q Street Bridge, 284. Quotations from great Americans on the National Capital, 357. Railroad into the District, first, 48. Rankin, Kellogg & Crane, architects, 284. Red Cross, American National, 275. Renwick, James, architect, 256, 284. Rhind, J. Massey, sculptor, 331. Rich, Lorimer, architect, 315. Rinehart, William H., sculptor, 226, 228. Riverside Drive, 93, 142. Rock Creek Cemetery, 187, 325. Rock Creek Church, 187. Rock Creek Park, 148, 159. Rock Creek Parkway, 93, 148. Rockefeller, John D., 129. Rodgers House, 177. Rogers, Randolph, 224. Roosevelt, President Theodore, 89, 91, 179, 279. Root, Elihu, 91, 95, 98. Ross, Albert R., architect, 333.