A related site is Burch Popcorn Machine. Although not as complete as
this site, its goal is the same. Burch Manufacturing Company was the name
used until Manley changed its name in 1940.
In addition to the Model 67, there are a variety of vista Pop models.
The Vista Pop models all use a see-through Pyrex kettle allowing people to see
the popcorn being popped. Models include 106, 122, 124, 127, and 128
(possibly more).
The above photo is of a Vista Pop machine on eBay, photo used with
permission of seller. The following is a close-up of the kettle.
Notice the Pyrex cylinder.
In the following video, you can see a Vista Pop dumping it popcorn.
This occurs at approximately the 2:42 mark.
A retired Manley Vista Pop can be found on the following page--Curt's
Theatre Inc. - Rolla ND(about half-way down the page)--it appears
to have an all-plastic top.