The "1955-56 Plymouth wagon" is a 1956.
The "1951? Ford" is definitely a '51.

Under those circumstances I also think that other blue one is a '71 for sure. It coincides with a format change for the 1971-72 season and seemed to make its first appearance when the Holden Ranch itself did.

If that's the case, then this is strictly a '72. Considering the time that TV studios actually make movies and TV shows before the actual release dates, this episode was probably made earlier in the year when there weren't any '73's out yet.

***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.***

This is from the episode "Run to Nowhere, Pt. 1" that first aired in most U.S. TV markets in November 1972. So the latest it would be would be 1973.

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.

Probably, I would have to see the index of your boxed set collection. I like the fact that the show was not unrealistic when it came to use of vehicles, like everyone in the neighborhood having a Chrysler product of some kind.

The shot I submitted of the '57 Bel Air, did indeed come from the episode where the hot rodder runs over Timmy's pet raccoon (Lassie viciously attacks the guy in his hot rod!). And I did get a very faint glimpse of the '60 wagon in the one about Timmy's go-cart.

I'm wondering if the '56 Plymouth I just submitted is that same Suburban you just mentioned?

Yes, it wasn't as cut and dry like some other shows at the time. Like all Fords or all Plymouths, etc. There was a blonde young lady in the Timmy era that always had a 57 Bel Air convertible. I think it is in the hot rod episode where Lassie saves a family of, let's see...coons? The episode with the traveling rodeo guy with his horse had a 57 or 58 Mercury Commuter to tow his trailer. And in the episode "Desperate Search," the blinded boy's family drives a 1956 Plymouth Suburban. Lastly, that white '60 Ford Wagon was used in several Timmy-era episodes, including the car belonging to Joey's father (of the blinded boy) in "Desperate Search," and, in the next episode in the series, as the gas company surveyers in the episode to save Mr. Cully's barn, "Home Within A Home."

I'm sure you know of this site, if it still exists.
http://www.lassieweb.org/

Thanks for the kind words, 58 R. Yes, that 50th anniversary set is a real treasure. The vehicles I still wish I could get are the '72 Dodge pickup from the Holden Ranch (final season; a better one than the one I submitted) and the earlier model D series Ranger Corey drove. It seems like there was an episode in which he's hanging off a cliff on a rope tied to the bumper and the truck starts rolling forward, but Lassie drags a log in front of one of the tires and stops it. I think that one even had a camper on it.

I loved "Lassie" when I was growing up, and even though the plots kind of bordered on silly sometimes, it could really get you in the gut. That three parter where Lassie gets lost and finds her way back to Timmy put a lump in my throat...and a lot of car images on this site. I have memories of watching the Corey episodes on CBS on Sunday nights and remembered there being a lot of trucks and cars on the show, but there were even more than I realized.