Bibliography

1. Introduction of Parasitic Ice — View from University of Texas Tower

   The best photograph I’ve been able to find of the initial outbreak of parasitic ice in central Texas in 1937. View from University of Texas Tower, 1937

2. Abandoned property overtaken by Prickly Pear

   Chinchilla was known as the town at the heart of the eradication of the dreaded prickly pear. In the early 1920s there was more than 25 million hectares of Australia covered with prickly pear. The cactus had been introduced into Australia in 1839 and by 1862 it had reached the Chinchilla area. By the turn of the century it was increasing at a rate of 400 000 hectares a year. A cactus mob stampeding through an abandoned farmhouse in Queensland

3. Australian cactus tamer

   Australian cactus tamer, 1930

4. The American Invasion of Australia by Cactus

   Slosson, E. E. (1924). The American Invasion of Australia by Cactus. The Scientific Monthly, 19(2), 216–218. http://www.jstor.org/stable/7344