cover Cawnpore: 1832 entire letter to a Captain in the Artillary at Dum Dum showing fine "CAWNPORE/PST PD /POST OFFICE" (HG 4), and 1837 (23 Jan.) entire letter to Saugor with fine "CAWNPORE/Pt Pd" d.s. (HG 6), both good strikes on reverse across join