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In 1872–75, Cunningham published the first Harappan seal (with an erroneous identification as Brahmi letters). More Harappan seals were discovered in 1912 by John Faithfull Fleet, prompting an archaeological campaign under Sir John Hubert Marshall. Marshall, Rai Bahadur Daya Ram Sahni and Madho Sarup Vats began excavating Harappa in 1921, finding buildings and artefacts indicative of an ancient civilisation. These were soon complemented by discoveries at Mohenjo-daro by Rakhal Das Banerjee, Ernest J.H. Mackay, and Marshall. By 1931, much of Mohenjo-daro had been excavated, but excavations continued, such as that led by Sir Mortimer Wheeler, director of the Archaeological Survey of India in 1944. Among other archaeologists who worked on IVC sites before the independence in 1947 were Ahmad Hasan Dani, Brij Basi Lal, Nani Gopal Majumdar, and Sir Marc Aurel Stein.
John Hubert Marshall