Ambulance - LEGO set #6680-1 (Building Sets > Town)
Lego Ambulance, Set #6680 - Released in 1981 | Lego Ambulanc… | Flickr
LEGO 6680 Ambulance Instructions, Rescue
VINTAGE LEGO 6680 1980's LEGO Town Ambulance £25.00 - PicClick UK
Lego 6680 Ambulance (1981) - LEGO - LastDodo
LEGO Town: Ambulance (6680) for sale online | eBay
Here's some Lego history for you. These are some instructions of my father's sets from when he was a child. Some pages are missing, but I thought I'd show what I have.
LEGO 6680 Ambulance Set Parts Inventory and Instructions - LEGO Reference Guide