The Duke was a great help to Gurwood in checking Indian place names especially where writing was difficult. The illegible word was Viziapour, a large town, he told Gurwood in January 1834. He was involved at every stage of the publishing process approving printer's sheets and final proofs. Much help was given by Lord Mahon who was a friend both of the Duke and of Gurwood. In 1834 he reported that Gurwood had asked him to send the proof sheets for Volume II to the press. 'From this time forward', he wrote, 'Colonel Gurwood constantly consulted me in the preparation of his work.'