Try looking at https://www.old-maps.co.uk/#/Map/393600/563722/12/100955 which shows the hospital on a 1960’s map. Click once on the minus sign in the blue panel top left hand corner of the map, and you should see the location of the building in relation to the present-day Gibson Fields. (If the map appears tinged blue, click on the blue square with a square inside it top right of the map.)