It was hanging there with majesty, an imposing size, a jaw-dropping blue: our favorite blue piece at the Frieze Art Show 2015 was a gigantic blue map presented by Daniel Crouch Rare Books, a specialist dealer in antique atlases, maps, plans, sea charts and voyages dating from the 15th to the 19th centuries.
Four rare lithographed maps depicting the operations of the British Army on the River Sutlej during the First Anglo-Sikh War of 1845-46 

