5053170 Back of the annexe east of Mother Pratt\'s, Douglas, Isle of Man, 1932-34 (b/w photo) by Frowde, John James (1868-1946); Manx National Heritage (Isle of Man); (add.info.: On the back of this photograph John James Frowde writes, "To find and add the two openings under the Custom House - one of them possible under St. B Church. There is another? Clearly seen, blocked up with stone masonry visible from the gate. To investigate. Oct/41."); by Manx National Heritage .