Recently, this interview was sent to me and honestly besides history text books, snippets of speeches, and actors playing MLK I had not read or heard much from MLK himself. The article is long and I am still reading it. The article is in a straightforward Q&A style and provides an in depth look at MLK's motivations and strategies.

http://www.alex-haley.com/alex_haley_martin_luther_king_interview.htm