- W.W. Hixson & Co.2
- Warner & Foote2
- Warner, George E., 1826?-19172
- Weiblen, Paul W.2
- Wellge, H. (Henry)2
- Wells, Edward, 1667-17272
- West Virginia. State Road Commission2
- Wheeler, A. O. (Arthur Oliver), 1860-19452
- William Blackwood and Sons2
- Wilson, Herbert M. (Herbert Michael), 1860-19202
- Wisconsin. Geology and Natural History Survey2
- Wm. M. Bradley & Bros.2
- Wright, George Burdick, 1832-18822
- Yeager, Joseph, approximately 1792-18592
- Young, Gilbert2
- Zatta, Antonio, active 1757-17972
- de Lavanha, I. B.2
- de Mannevillette, Jean-Baptiste-Nicolas-Denis d' ApreeĢs, 1707-17802
- A. Hoen & Co.1
- A.S. Barnes & Co.1