We've got a big Tombstone issue going out the door next week and inside we have one of the best descriptions of what actually happened at the Spicer Hearing I have ever read (hint: it was written by Casey Tefertiller). Since we're dealing with the legend and how the most famous stroll in history became so iconic, Dan The Man is noodling a couple cover approaches:
And I'm doing an artistic version for usage inside to illustrate the various phases of the walk down.
If you truly want to know the genesis of the O.K. Corral fight there are a couple quotes from witnesses that help explain how the fight came off. To me this is the biggest and best insight: