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- United States -- History6
- Arches4
- Bridges3
- Marine engineering3
- Military engineering2
- Peninsular Campaign, 18622
- Roads2
- Steam-engines2
- Steam-engines, Compound2
- Strains and stresses2
- Tactics2
- United States. -- Army -- Biography2
- America -- Climate1
- Bessemer process1
- Bridges -- Design and construction1
- Bridges -- Missouri1
- Brooklyn (New York, N.Y.)1
- Cement1
- Charleston (S.C.) -- Defenses1
- Charleston (S.C.) -- History1