For my good friend Josh, the new owner of this old lockset.
Side view showing how it all fits together. The thumblatch part is just a bit lower than the knob.
The interior. That spot above the doorknob should be the back of the deadbolt. I don't know what ever happened to that- it didn't come with the door, sorry.
Two attempts to show how the first plate comes off. There is a second plate, then the lockset.
The thumb latch, doorknob, and dead bolt all had to be removed before I could get the lockset out.