Photo manipulations can be done through use of scale models, use of negatives, alterations during and after development of film. It's very hard to do well due to the preciseness of the work. These are some of the best film edits I've ever seen.

No, he used a computer.

Art thou daft?

he actually did not use a computer for these. A lot of crossed over negatives, some enlarging photos in his dark room, and a bit of air brush. Its magic. (he probably did some other stuff too but those are the main things I could find out about him)

Proof?
Unless he lived in the 1950's, it's hard to believe that.

I'm not even sure why you mentioned the 1950's since the first home computers weren't even available until around 1981.
But also, http://thomasbarbey.com/about-thomas-barbey.cfm
its his official page, and he explains the general method he uses to make these images. Make sure to click the link under his picture in case it is telling about himself. This man was incredibly talented, but it shouldn't be unbelieveable, although it is definately amazing. I do hope that the link to his website works as proof. =)

I feel like he made the images black and white on purpose to make them look older then they actually are. I said 1950's because they were black and white. Also, he doesn't need to use a home computer, he could have used some type of professional computer only designed for picture editing from the 60's.

He might have used black and white. Here are some photos. I glanced through it and they all seem to be from 1950 and earlier before any type of photo software even exsisted. I believe this man is just a lot better at this than these guys were. I understand your skeptical view on it being without a computer, but sometimes people are just amazing. In my honest opinion, this is what has happened here.

Its not all the time when you get all of this nature in one spot!

Well, I didn't catch a fish today, but I sure did catch one heck of an afternoon! Heheha!

lookit this tree.. this is an aspen tree. you can tell it's an aspen of the way that it is!

Doctoring photos is a thing. Trust me, i am photography.

They're done naturally in the sense that no digital effects are used. These are done by splicing two or more existing negative prints together.

So can the media.

Who was the overcoated lad on the right?

Nikolai Yezhov. Purged in 1940. Not exactly a nice guy.

Ah, of course, none of those frauds were, thank you kind sir.