Spent some time looking at details on the car, and cataloging the "missing" things. Very interesting construction and everything was a no-nonsense job. I guess that's why they had the reputation!
1. There were previously three D/E oxygen cylinder base holders in the attendant seat compartment. I am aware these are the "scalloped" top holders as shown in this contemporary Oxequip ad.
2. Same photo also shows a missing object in the wall. The hole traverses the partition and ends up on the other side with a smaller "ring" impression surrounding it on the upholestery. I suspect this to be for some kind of oxygen outlet, perhaps suction, but not sure. Whatever it is, it must have fit in between the tight space of the three portable cylinders also in that area.
3. Missing item with oblong outline and two screws alongside the resuscitator cabinet. Perhaps it goes along with the hole that went through the partition - oxygen possibly?
4. Three photos showing the other side of the resuscitator cabinet. Two rectangular outlines with oddly staggered screw holes as shown on left. Rectangular pattern of screws on the right. A Eureka factory photo taken from the rear door seems to show a cylinder (thermos?) or something similar there - but no idea what it really is.
5. Last few from the driver's side of the partition. It was very difficult to photograph due to lighting - but you can see different placed holes all along the partition. This would appear to me to be for tool mounts similar to what S&S put underneath their bench seat as shown at
http://www.professionalcarsociety.org/forums/showthread.php?t=9347 . As this car had bucket seats and a center console from the factory, that wouldn't be possible and would require mounting along the wall. I wonder if Mr. McDonald's 1964 Hi-Boy is similar?
I wish folks wouldn't strip parts out every time an old ambulance changes hands - after all - it's rarely put on the brand new ambulance. However, all part of the fun!
Any thoughts appreciated. I'm still digging myself.