- 7 Black letter (typefaces)
- 1 Black Mountain, North Carolina
- 1 Black, Henry
- 52 Black-and-white photographs
- 1 Black-and-white prints (photographs)
- 3 Blackboards
- 1 Black-eyed Susans
- 2 Blacksmithing
- 6 Blacksmiths
- 1 Blackwell, Robert, 1748-1831
- 1 Blackwood, Alexander, 1806–45
- 1 Blackwood, Charles, H.
- 2 Blackwood, John, 1818-1879
- 3 Blackwood’s Edinburgh magazine
- 1 Blaise, Saint, d. ca. 316
- 1 Blakemore, Mayo & Co.
- 1 Blaming
- 4 Blanchard, Laman, 1804-1845
- 8 Blanche A. Nixon
- 6 Blancoyd Road
- 1 Blandon, Pennsylvania
- 3 Blankenburg, Rudolph
- 9 Blankets
- 1 Blantyre Mills
- 61 Bleak House
- 6 Bleigh Street
- 4 Blessings
- 1 Blessing's Saw Mill
- 23 Blessington, Marguerite, Countess of, 1789-1849
- 1 Blewitt, Octavian, 1810-1884
- 5 Blind (people)
- 7 Blind man's buff (Sculpture)
- 1 Blind persons
- 8 Blindfolds
- 13 Blind-Institutional Care
- 2 Blinds
- 6 Blizzards
- 9 Block printing (relief printing process)
- 4 Blockely Almshouse
- 2 Blockelyville Hotel
