Now the Dodge pickups;

1965 or 1966.



Either in 1967 or early-1968.


1970 or 1971.

These do look like D-Series trucks, but you'd think being part of the U.S. Forest Service, they should've been W-Series trucks.

Now this one;

If it's not a '72, it's a later one. I'd like if if you could get a better shot of it myself, but I can see just enough that it is a D-Series.