Observatory Hill in Sydney observatory hill Sydney file no. OHS-21 file no. OHS-22 file no. OHS-23 file no. OHS-24 file no. OHS-26 file no. OHS-27 file no. OHS-28 file no. OHS-29 file no. OHS-30 file no. OHS-20 file no. OHS-19 file no. OHS-17 file no. OHS-16 file no. OHS-15 file no. OHS-9 file no. OHS-10 file no. OHS-11 file no. OHS-12 file no. OHS-13 file no. OHS-14 file no. OHS-8 file no. OHS-7 file no. OHS-6 file no. OHS-5 file no. OHS-4 file no. OHS-3 file no. OHS-2 file no. OHS-1 file no. OHS-18 file no. OHS-25
