This really shows, when compared with the 1975 map also just uploaded, the first period of the modernisation of Perth Zoo. Further comparison with the current map shows how that modernisation was carried through to the current day.
As with previous map, the 'otter castle' is not shown, but again was definitely there and in use on this visit. But where was it?
'Bear/ Dog Row' still there (No. 22) but Polar Bear enclosure gone (despite being built after the other bear enclosures).