I saw an old movie many years ago about the white house which I believe was called up the back staircase at the white house is it available in dvd?

Is this the movie:

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http://www.imdb.com/title/tt0078565/

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If Yes, it is available:

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http://www.play.com/DVD/Region_1/4-/748548/-/Product.html?searchstring=Backstairs+at+the+White+House&searchsource=0

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