Some of you may remember that The American Club used to be located right next to the HSA east compound, just to the left of the hostels. I received some photographs from Les Duffin that he took from the roof of the hostel closest to Chung Shang (ZhongShan) North Road. The first photo shows the back of the American Club and its tennis courts. I lived in the second hostel (which you can see the corner of here) and I remember looking down on those courts just about every day.
The second photo is what Les believes was the main Entrance to the club.
By the way, since my room in the hostel faced west toward Chung Shan North Road, the only way I could have seen those tennis courts from above (short of climbing up on the roof) would be from the back of the hostel. It seems to me that there was a window on the landing of the stairway that faced east (the back side). Does anyone remember if that was the case?