- 5 Steelton, Pennsylvania
- 1 Steel-to-steel beam hangers
- 7 Steeples (building components)
- 1 Steering wheels
- 1 Steigerwalt
- 1 Steinmetz Saw Mill
- 2 Steinway & Sons
- 6 Stenciling (process)
- 4 Stencils (images)
- 4 Stenton Avenue
- 12 Stenton House
- 1 Stenton Mill
- 1 Stenton Mills (F.W. & T.S. Henson)
- 6 Stenton, Pennsylvania
- 6 Stephen F. Whitman & Son
- 20 Stephen Girard's Bank
- 1 Stephen Tilton & Co.
- 8 Stephen, Saint, d. ca. 36
- 1 Stephen, Saint, d. ca. 36 - Reburial of relics
- 1 Stephen, Saint, d. ca. 36 - Stoning
- 1 Stephens, Alexander Hamilton,--1812-1883.
- 1 Stephenson, George, 1781-1848
- 1 Stephenson, Robert, 1803-1859
- 2 Stepney, Catherine Pollock Manners, Lady, d. 1845
- 9 Steps
- 348 Stereographs
- 1 Stereoscopic photographs
- 1 Stereoscopic photography
- 2 Stereotypes (printing plates/blocks)
- 4 Stereotyping
- 1 Sterling, Illinois
- 1 Stern Co. Furniture & Carpets
- 1 Stern wheelers
- 1 Sternberger & Co. Shirt Factory
- 1 Stetson's Hat Factory
- 1 Stevens, Benjamin Machine Shop
- 1 Stevens, William Bacon, 1815-1887
- 1 Stevenson's Mill
- 2 Stewards
- 1 Stewart, William Henry Nassau, b. 1822
