It could really do with some sort of behind - the - scenes featurette on there, but other than that it's a reasonable enough package. (movie-gazette.com)
There is a behind - the - scenes featurette with interviews with the cast within a collection of raw clips. (mediamikes.com)
Includes an archival promotional behind - the - scenes featurette from 1967 featuring the cast and crew. (parallax-view.org)