Victory gardens during WWII. (They were also done during WWI). This page has a basic historical description of the Australian situation:
While Australian, this page uses the Obama White house garden (and Michelle Obama) to segue into discussing Victory gardens in general, and details some of the benefits of mass-gardening:
Im not sure what the take home message of this is. It isnt to replicate it, because it was an emergency situation. I suppose I wanted to post it as a stand out piece of Australian gardening history.
Finally, a really impressive picture of a garden built in a bomb crater. Look at it full screen and note the size and the detail (eg bricks at the entrance!)
A great-parish level 'gardening guild' initiative from Kettering, Ohio. Very encouraging!
Nice tips page