The titles that Phil linked to covers them. From what I remember the extras had Eastwood, Tarantino, Scorsese, Frayling and others commenting. The movie’s were low budget with tight shooting schedules but good writing. Burt Kennedy wrote most of them and went on to direct Hannie Caulder and The Devil’s Backbone aka The Deserter, which have SW qualities. The Tall T is my favorite of the.Scott/Boetticher films. They were all good, weren’t really SW-ish but had a quality to them that separated them a little from other American westerns.
This link describes them: http://ranown.blogspot.com/
A good overview of them all:
