The hall was the home of the New Territories Agricultural Association. It was paid for by a donation from Mr J E Joseph.
The Hall was opened on 9th Jan 1938, and the opening was reported in the newspapers at the time.
Here are photos of the building in the 1950s:
Its location is marked by the red circle on this map:
You can see how the location was found in the comments at this page: http://gwulo.com/node/36509
The building has since been demolished.