© MTA Metro-North Railroad/Frank English: vi–vii, 2, 3, 11, 19, 31, 68–69, 79, 126, 155, 190, 195, 217, 218, 221, 232–33, 261, 262, 267, 271, 275, 289, 291, 303.
Courtesy, Frank English: i, ii, v, xii, xv, xvi, 7, 14, 21, 34–35, 93, 102, 103, 105, 108, 111, 197, 200–201, 203, 204, 208, 209, 226–27, 234, 235, 237, 242, 244, 245, 246, 255–57, 259, 261–65, 268, 272, 277, 292, 296, 304.
Ed Nowack/Penn Central Company: viii; Arthur Rothstein/Library of Congress: xi; Library of Congress: 22, 27, 58, 87, 282; Penn Central: 45, 55, 62, 64, 112, 120; Signal Corps, Brady Collection/National Archives: 39; Museum of the City of New York: 48, 87; Wide World Photos/The New York Times: 66, 94–95, 114; Rubenstein Library/Duke University: 70; The Library of Congress: 76–77; The New York Times: 83, 159, 229; Otto Nelson/Avery Library of Columbia University: 84, 90; New York City Dept. of Information Technology & Telecommunications: 96, 97; David V. Hyde/Penn Central Company: 119; Ward Allan Howe: 125; Municipal Archives of the City of New York: 124; Neal Boenzi/The New York Times: 137; Edward Hausner/The New York Times: 142–43; Jack Manning/The New York Times: 148, 241; Neal Boenzi/The New York Times: 158; Ewing Galloway: 163; Patrick A. Burns/The New York Times: 167; William Eckenberg/The New York Times: 172; Arthur Brower/The New York Times: 177; The Associated Press: 181; Don Hogan Charles/The New York Times: 184; Sara Krulwich/The New York Times: 188; Fred R. Conrad/The New York Times: 196, 240; Keith Meyers/The New York Times: 197; Bill Swersey for The New York Times: 212; Vic DeLucia/The New York Times:224; David W. Dunlap: 243.