1908 August 1,

large envelope with a watercolour of an exotic bird - the Black-Backed Tanager, sent from Stockton-on-Tees to London 1 August 1908, franked with a single 1d., tied by the Stockton-on-Tees code '2' time '11 AM' circular date stamp of despatch in black, London arrival date stamp on the reverse the same day; fine.

The Black-Backed Tanager is found in South-East Brazil. There is an estimated population of 2,500 to 10,000 which is decreasing and therefore seen as vulnerable

From the Bishop correspondence