S
- saddlebag houses (3)
- Saddlebag houses (3)
- Saddler Shop ()
- Saddlers' Building ()
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- safety (3)
- SAFR ()
- Sagamore Hill ()
- sailing ships (2)
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- sailing (3)
- Sailor's Home ()
- Sailors Home Chapel ()
- Sailors Home Dorm ()
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- Sailors Home ()
- sailors (2)
- Saint Croix Island ()
- Saint Gaudens National Historic Site ()
- Saint Paul's Church National Historic Site ()
- saints (2)
- Salem Maritime ()
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- Sales Office ()
- sally ports (4)
- Sally ports (4)
- Sally Port ()
- Saloon & Apartments. ()
- Saloon/Apartment ()
- saloons (27)
- Saloons (27)
- Saloon ()
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- Salt Mining & Crush. ()
- Salt Works ()
- Saltpeter Processing ()
- saltworks (2)
- Saltworks (2)
- San Antonio Missions ()
- San Juan (165)
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- sanctuaries (2)
- Sand Washing ()
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- Sandstone abutments (1)
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- sandstone (59)
- sanitary engineering (9)
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- sanitoriums (20)
- Sanitorium ()
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- saw industry (3)
- Saw Mill ()
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- Sawmill Office ()
- Sawmills (29)
- sawmills (29)
- Sawmill ()
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- Schools (313)
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- Sea Wall ()
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- Seamen's Bethel ()
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- search & rescue operations (14)
- seasonal dwellings (1)
- Second Empire architectural elements (12)