Plan of Lucknow,

A fine copy of a scarce map of Lucknow produced a year before the start of the Sepoy Mutiny of 1857 and crucial for its relief.

Moorsam's map proved invaluable to Sir Henry Havelock and James Outram for the relief of Lucknow during the Sepoy Rebellion. Serendipitously, had been commissioned the previous year by the East India Company who realised that they knew very little about the city and were in urgent need of information to ensure the smooth running of Lucknow after annexation.

William Robert Moorsom (1834-1858), captain in the 13th light infantry, was appointed ensign 52nd light infantry on 17 Aug. 1852, and lieutenant on 10 June 1853. Moorsom was promoted to captain in the 13th light infantry on 2 March 1858, and was killed shortly afterwards, on 24 March 1858, during an attack on the iron bridge at Lucknow.