Found on http://steampunkvehicles.tumblr.com/Jim has nailed this ambulance on several perspectives;
What's interesting about this car is that it was made from a sedan, not a wagon, as most ambulances were. This was converted by the Memphian company. Other Edsel ambulances were made by Amblewagon, but they started life as wagons
Thanks Jim! I missed that roofline issue and would never have known anything about the conversion companies. It's way cool that you left this info in the comment section, my compliments and appreciation!