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A reddening map for the North Galactic Pole region based on uvbyβ photometry of ∼ 1000 stars with b > 75° is presented. The only significant amount of reddening occurs over about half the field and within the first 100 pc; there is an additional small H I cloud with associated dust at about 120 pc. Otherwise much of the volume seems to be essentially free of interstellar absorption at least out to 1 kpc.
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Hilditch et al. (1983) studied this question.
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