Forts

List of forts, also browsable by Presidency.

External links

European Forts in India Photographs (and text) from Skyscrapercity.com
Hidden History: The Forgotten Stories Behind 12 Of Mumbai’s Forts June 29, 2015. homegrown.co.in
Forts of Maharashtra Photographs from Skyscrapercity.com
The Hill Forts of Maharashtra www.ibiblio.org/britishraj
Forts of Pakhtunkhwa North West Frontier. Khyber.or
"Forlorn fortifications:  Weather-beaten citadels and moat-girded forts in Punjab" by  Puneetinder Kaur Sidhu  June 15, 2014 The Tribune (retrieved 18 June 2014)
"The Gorkha Castle History of Himachal Pradesh" September 18, 2013 veergorkha.com, now archived.

The Strongholds of India by Sidney Toy 1957 Archive.org. Some additional content is included in the following book.

The Fortified Cities of India by Sidney Toy 1965. Archive.org Books to Borrow/Lending Library.

Forts of India by Amrit Verma 1985. Archive.org Books to Borrow/ Lending Library.