I had occasion to be in a catalogue that has various switches for electric cooling fans. I know this question comes up from time to time so I thought I'd put the info in here for anyone who might have an interest in this.
1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)