Publishers
- Northern Mine Research Society 3
- Northumberland County Library 1
- Northumberland Press 1
- Northwood Books 1
- Nostalgia Road Publications 2
- Nottingham City Museums 1
- Nottingham Civic Society 1
- Nova Publishers 2
- Nova Science Publishers 4
- Noyes, Platt & Company 1
- Nucleo Applicazioni Sperimentali Aeromodellistiche 1
- Number One Press 1