Channel 62 where it falls into Fountain House drain. From west and above ... AMS 2776 Horizontal (normal) ... 11 May 1954
Channel 62 where it passes through wall in 23m square. From above and to north ... AMS Horizontal (normal)
Channel 62, present start and turn to pass through wall in 23m. square. From south. Upper right, Channel 63 ... AMS Horizontal (normal)
Channel 63 from northwest and above ... AMS Horizontal (normal)
