Night Slaves (1970)

http://www.imdb.com/title/tt0066140/


The People (1972)

http://www.imdb.com/title/tt0069072/


It! (1966)

http://www.imdb.com/title/tt0061826/


The Mutations (1974)

http://www.imdb.com/title/tt0070423/


The Snake Girl and the Silver-Haired Witch (1968)

http://www.imdb.com/title/tt0142360/


Any help would be appreciated

So here is what I can provide for you:

The first two will be hard to get since they were only made for television.

Torrent link for "The People": http://cinemageddon.org/details.php?id=4582&hit=1 - you have to register here first!!

I couldn't find anything about "it!".

There is already a thread for "The Mutations" here: http://forum.dead-donkey.com/viewtopic.php?t=13085

Couldn't find anything for the japanese film you listed at the end.

You just made a duck happy

I'm sure it wouldn't be the first time.