CAMRA West Suffolk & Borders branch.last updated 30/12/2019
Newmarket York Armshistorical closure era: Victorian / Edwardian
The 1911 census transcription lists the pub in Exning Road, but the original looks more like Exeter Road and the 1901 census also lists the pub in Exeter Road.
No building in the area gives any indication of having been a pub, but the existence of York Terrace suggests it was likely towards the Exning Road end. Perhaps it was another name for the nearby Mount?
(Most pub, location & historic details collated by Nigel, Tony or Keith - original sources are credited)