Looking for Help Identifying Vintage Model Planes!

[carrk]

Hi there! I need help identifying some model planes for a research project! Sadly, I know nothing about planes... so I thought I'd reach out to some people who do!
The photos are from a 1971 model plane show in Nova Scotia. (Sorry the pictures are so blurry, but this is all I have!)
I'm trying to figure out what kind of plane, RC, kit, or model they are. These are all from before the 70's, so I don't really expect anyone to know the exact specifications, but if these remind you anything please let me know!
Even ballpark estimates will help my research! Thanks in advance!

Plane 1:


Plane 2:

Plane 3:


Plane 4:


~~~~~
I also have a photo of this model zeppelin. I know it's not a plane, but if you also happen to know anything about what this might be let me know! Thanks again!

[champ driver]

I don't know what any of the others are but photo 4 is a Heath Baby Bullet. It was a very small racing plane in the late 1920's.

Read more here,
http://www.airracinghistory.freeola....20Baby%20Bulle

[BusyLittleShop]

Photo #2
I believe is suppose to be a P51D but its crude...

[Eric Page]

Photo #2
I believe is suppose to be a P51D but its crude...

Did anyone ever put a P-51 on floats? I suppose it's possible, given that it's a model.

It appears to have a single cylinder nitro engine sticking up from the cowling, which suggests that it's RC.

I don't have a specific make/model in mind, but it looks to me like it could be a Schneider Trophy racer. Perhaps that's a number "1" or "7" on the aft fuselage, and maybe a sponsor logo on the wing?

[gmatejcek]

I'd suggest checking with the Academy of Model Aeronautics and their museum in Muncie, Indiana.

[Dana]

Photo #2
I believe is suppose to be a P51D but its crude...

Not a P-51, is a typical R/C pattern (stunt) plane of the early 1970s. Not sure which one, there were hundreds of designs back then... it looks a little like a Sterling Lancer but the rudder shape is wrong, the tail looks like a Kaos but the fuselage doesn't. Most R/Cs of the era weren't intended to represent any particular full size plane.