The Galleries
- Robert E. Petersen Collection
- Ancient Firearms - 1350 to 1700
- Road to American Liberty - 1700 to 1780
- A Prospering New Republic - 1780 to 1860
- A Nation Asunder - 1861 to 1865
- The American West - 1850 to 1900
- Innovation, Oddities and Competition
- Theodore Roosevelt and Elegant Arms - 1880s to 1920s
- World War I and Firearms Innovation
- WWII, Korea, Vietnam and Beyond - 1940 to Present
- For the Fun of It
- Modern Firearms - 1950 to Present
- Hollywood Guns
A Splendid Little War
Guns of the Spanish American War
- Colt (Hartford, CT) Model 1892 New Army Revolver
- Colt (Hartford, CT) Model 1902 Army Double-Action Revolver
- Colt (Hartford, CT) Single Action Army Revolver
- Ludwig Loewe Waffenfabrik M1895 Spanish Contract Mauser
- Ludwig Loewe Waffenfabrik Spanish Contract M1893
- Mauser (Oberndorf, Germany) Spanish M1893 rifle
- Mauser M1896 Spanish Contract Bolt-Action Rifle
- Rough Rider San Juan Hill Colt SAA Revolver
- U.S./Springfield (Springfield, MA) Model 1884 "Trapdoor" Rifle
- U.S./Springfield (Springfield, MA) Model 1896 Krag Bolt-Action Rifle
- U.S./Springfield (Springfield, MA) Model 1898 Krag Bolt-Action Rifle
- U.S./Springfield (Springfield, MA) Model 1898 Krag Bolt-Action Rifle
- U.S./Springfield (Springfield, MA) Model 1898 Krag Bolt-Action Rifle
- U.S./Springfield M1888 "Trapdoor" Single-Shot Rifle
- U.S./Springfield M1896 Krag Bolt-Action Carbine
- U.S./Springfield Model 1899 Krag Bolt-Action Carbine
- Winchester-Lee (New Haven, CT) Straight-Pull U.S. Navy Rifle