Maratha successor state ruled by the Holkar dynasty on the Malwa plateau, founded as a jagir under Malhar Rao Holkar and later governed from the Narmada-side capital of Maheshwar (notably by the queen Ahilyabai Holkar) and then Indore.
Became a 19-gun-salute princely state within the Central India Agency under British protection after 1818; acceded to the Dominion of India in 1948.
Standard scholarly history of the Maratha states including the Holkars of Indore; verified via Open Library.
Classic multi-volume narrative covering the rise of the Maratha successor states in Malwa; verified via Open Library.