Light Bomber, 1924-1926
- LB-1 - Huff-Daland (later Keystone)
- LB-2 - Atlantic Aircraft Corporation (Fokker Aircraft Corp next 1925)
- XLB-3 - Keystone
- XLB-4 - Martin
- LB-5 - Keystone
- LB-6 - Keystone
- LB-7 - Keystone
- LB-8 - Keystone
- LB-9 - Keystone
- LB-10 - Keystone
- LB-11 - Keystone
- XLB-12 - Keystone
- LB-13 - Keystone
- LB-14 - Keystone
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