3rd World Farmer: A simulation to make you think.

But where is the green sheep? Old maps put the art in cartography The national library's Trove digital service has been highlighting quirky old maps of the continent, starting with a 1920s graphic dividing the country up into the sheep haves and have-nots. Artist Judy Horacek, who illustrated Mem Fox's children's classic Where is the Green Sheep?, approved of the idea. For the record, Meat and Livestock Australia has this more modern take on the old sheep map, which is impressively precise — who knew there were only 167 head of sheep in the Northern Territory? The sheep map was such a hit, Trove has been pointing out other old maps of Australia in their collection of more than 600,000. All of those sheep needed 'much grass' to graze on. What was the purpose of the maps? Maps curator at the National Library of Australia, Martin Woods, says these types of maps were produced for government circulation, school text-books or as part of campaigns to change public awareness or support industry. What else can we find out from old maps? Zoom in for a closer look.