- 1 Window sills
- 58 Windows
- 9 Windrim Avenue
- 59 Windrim, James H. (James Hamilton), 1840-1919, Architect
- 2 Windsor chairs
- 5 Wine
- 14 Wine
- 2 Wine bottles
- 22 Wine industry
- 7 Wine making
- 7 Wineries
- 9 Winged Horses (Philadelphia, Pa. : Monument)
- 6 Wingohocking Mills
- 23 Wings (animal components)
- 2 Wings (building divisions)
- 1 Wink, Benjamin
- 1 Winn Memorial Public Library
- 1 Winnowing
- 1 Winpenny Mills
- 1 Winslow, Edward, 1595-1655
- 1 Winslow, John Ancrum, 1811-1873
- 1 Winslow, New Jersey
- 33 Winter
- 2 Winterbourne
- 1 Winthrop Smith & Co. Bankers (Firm)
- 8 Wire
- 1 Wire Bridge Hotel
- 26 Wire photographs
- 1 Wisconsin
- 7 Wisconsin State Building
- 1 Wisdom
- 7 Wises Mill Road
- 1 Wisler, Benjamin Brick Yard
- 1 Wisler, H.H. Lumber Yard
- 1 Wissahickon Avenue
- 11 Wissahickon Avenue
- 2 Wissahickon Carpet Factory
- 52 Wissahickon Creek
- 1 Wissahickon Drive
- 21 Wissahickon Drive
