[jmherbener]

Here is Mises in Human Action on human cooperation:

http://mises.org/daily/2813

Also, Frederic Bastiat is a great champion of social cooperation, although he focuses on why the interest of classes in society are harmonious.

http://library.mises.org/books/Frederic%20Bastiat/The%20Bastiat%20Collection.pdf

And here is Guido Hulsmann on Bastiat:

http://mises.org/journals/qjae/pdf/qjae4_4_3.pdf