[RSwank]

There is a lot of info here:

https://en.wikipedia.org/wiki/The_Hump

While "wiki" sometimes has a bad reputation, it gives you some background and a place to start. Some of the links it gives can be found on the internet archives if they are no-longer active directly.
Some other links:

http://www.historynet.com/salvation-hump-wwii.htm

http://www.macon.com/news/local/comm...e40493031.html