| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
- Wach, Joachim. Papers
- Walden, John Morgan. Papers
- Walker, George C. Scrapbook
- Wallace, Elizabeth. Papers
- Wallin, Madeline. Papers
- Walton, Charles. Collection
- Ward, F. Champion. Papers
- Warner, W. Lloyd. Papers
- Washington Association of Scientists. Records
- Wax, Rosalie Hankey. Papers
- Webster, George Washington. Lectures on Physical Diagnosis
- Webster's Third New International Dictionary. Clippings
- Weeks, Charles Bryant Frederick. Papers
- Welcker, Adair. Papers
- Weller, Stuart. Papers
- Welling, Harriet Walker. Papers
- Wells, Edward Franklin. Papers on Pneumonic Fever
- Wells, Edward Franklin. Pulmonary Tuberculosis
- Wells, Ida B. Papers
- Westinghouse Air Brake Company, The Story of the Air Brake
- Whistler, George William, Report to Count Kleinmichel on gauge of track to be used in the St. Petersburg and Moscow Railroad
- White, Leonard D. Papers
- White, Leonard D. University Senate. Papers
- Whitman, Charles Otis. Collection
- Whittlesey, Charles. Letter
- Wilcox. Delos Franklin. Papers
- Wilczynski, Ernest J. Papers
- Wilder, Thornton. Papers
- Wilkening, Marvin. Papers
- Wilson, John Todd. Papers
- Wilt, Napier. Papers
- Winston, Thomas. Papers
- Wirth, Louis. Papers
- Wirth, Mary Bolton. Papers
- Withrow, Thomas Foster. History of the Chicago, Rock Island, and Pacific Railway Company from its Inception, February 27, 1847 to Date
- Woodruff, Timothy Lester. Papers
- World Citizens Association. Central Committee. Records
- World Citizens Association. Chicago Group. Records
- World Conference on Faith and Order. Collection
- World Movement for World Federal Government. Records
- World Republic. Records
- World’s Columbian Exposition, 1893. Records
- Wyatt, Edith. Papers
- Wyler, Silvain and Arma. Collection