United States Rest Camp at Knotty Ash, Springfield Park

Can anyone help with the location of the United States Rest Camp at Knotty Ash used during the First World War. One report said that the troops left the train at K A station and walked a quarter of a mile to " an oasis of tents." Were there barrack buildings there as well as my grandfather was there in 1918 awaiting a ship for Cananda with his new bride.Could the site have been in the grounds of Thingwall House?