On: In praise of Objective C

[protomyth]

Brad Cox is the original creator and has two very interesting books.

Object-Oriented Programming: An Evolutionary Approach - this one covers an early version of Obj-C http://www.amazon.com/Object-Oriented-Programming-An-Evoluti...

Superdistribution: Objects as Property on the Electronic Frontier - economics of software components - http://www.amazon.com/Superdistribution-Objects-Property-Ele...