It appears that this was probably released in the U.S. under the title "The Girls of Mr. X"
Here are scans from a magazine published in 1980 with a review of "The Girls of Mr. X," which sounds like a variation on Die M?dchen des Herrn S.
CINEMA-X
The Adult Cinema Review Magazine
October 1980
Vol 1 #8
Publisher: Woodhill Press Inc., New York City
[IMG]http://thumbnails7.imagebam.com/830/934c3d8292478.gif[/IMG] [IMG]http://thumbnails7.imagebam.com/830/866cf48292480.gif[/IMG] [IMG]http://thumbnails7.imagebam.com/830/bafa838292481.gif[/IMG][IMG]http://thumbnails7.imagebam.com/830/0440fc8292546.gif[/IMG] [IMG]http://thumbnails7.imagebam.com/830/22da348292549.gif[/IMG] [IMG]http://thumbnails7.imagebam.com/830/d4d4bb8292551.gif[/IMG] [IMG]http://thumbnails7.imagebam.com/830/03dafd8292554.gif[/IMG] [IMG]http://thumbnails7.imagebam.com/830/0c80718292555.gif[/IMG]
Thanks to searcher2cr for the mag scans