Bryan C sent me some photos of the SR-71 cockpits taken during his visit to Castle Air Museum on the Cockpit Open Day. This first and second photos show the front cockpit, occupied by the pilot.
The following photos show the rear cockpit, used by the Reconnaissance Systems Officer (RSO). The largest display panel is the radar display. Above it there used to be the viewsight display, but it has been removed.
Thanks, Bryan!