Capitol, the: Bronze doors of, 224. Description of, an early, 165. Description of, a later, 219. Enlargement of, 49, 219. Group, 85. House of Representatives wing of, bronze doors of the, 228. Paintings in Rotunda of, 221. Senate wing of, bronze doors of the, 226. Capitol Grounds and Union Station Plaza, development, 296, 301. Capitol Prison, old, 43. Capper-Cramton Act, the, 108, 151. Carnegie, Andrew, 276. Carnegie Institution of Washington, 277. Carrere & Hastings, architects, 235, 277, 313. Carrollsburgh, 37. Casey, Edward Pearce, architect, 245, 275, 284, 343. Casey, Thomas Lincoln, 205. Cassatt, Alexander J., president Pennsylvania Railroad Co., 84. Catholic University of America, 279. Centennial Celebration, influence on Art, 65. Central Heating Plant for Public Buildings, 284. Chain Bridge, 284. Chamber of Commerce of the United States of America, 277. Chesapeake & Ohio Canal Co., 45, 109, 182, 183. Chicago, 65. Chief of Engineers, 147. Chodzinski, Kasimiriez, sculptor, 331. Christ Church, Alexandria, Va., 117. Christ Church, Washington, 187, 190. Churches in Washington, National, 289. Clarke, Gilmore D., 119. Clay, Henry, 99, 176. Columbia Institution for the Deaf, 279. Columbia Island, 137, 142. Columbus Monument, 241. Commerce Building, Department of, 279. Committee on the Library, 98, 161. Congress of the United States, 228. Congressional Cemetery, 190. Congressional Record, 232. Connogochegue River, 7. Constitution Avenue, 135, 293. Constitution Hall, 275. Constitution of the United States: Provision for Federal District, in, 4. In Library of Congress, 247. Continental Congress, the: Cities occupied by, 1. Inconvenienced by moving, 2. Coolidge, President Calvin, 276, 296. Coolidge, Mrs. Elizabeth Sprague, 250. Council of Fine Arts, 95, 99. Corbett, Harvey W., architect, 119. Corcoran Gallery of Art, 65, 179, 275. Corcoran House, 179. Couper, William, sculptor, 326. Courts of the District of Columbia, 193. Crawford, Thomas, sculptor, 224, 226. Cret, Paul P., architect, 252, 276, 284. Custis, George Washington Parke, 182, 203, 309. Dante, statue of, 159, 339. D’Arc, Jeanne, statue of, 159, 333. Daughters of the American Revolution, National Society of the, 275. Decatur House, 176. Declaration of Independence, 9. In Library of Congress, 245. Delano, Frederic A., 163. Delano & Aldrich, architects, 284. Dermott, James R., plan of, 32.