Actually they were released   from 73-75. The videos were released about a
year or two later . They are VERY RARE. They are basically the most
exspensive out of print videos aroung. an Unopened copy of THE ICEMAN
COMETH was sold to the director for $1500 and most tapes in the series now
sell for $500 or more.
You can usually get them from Video Oyster at  212-989-3300 a company which
specializes in out of print videos ( Legal Copies only)
Hope this helps
Jessica Rosner
Kino International Corporation
333 W. 39th St. Suite 503
New York, NY 10018
fax: (212)714-0871
Screen-L is sponsored by the Telecommunication & Film Dept., the
University of Alabama.