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Galactic and Extragalactic Studies: XXII. Extent of the Galaxy in the Anticenter Octant. [PDF]
Proc Natl Acad Sci U S A, 1952 Shapley H, Hearn AB.
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Pulsating Star Mystery Solved in Rare Alignment of Cepheid Variable and another Star
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A Contribution to the Study of Galactic Dimensions. [PDF]
Proc Natl Acad Sci U S A, 1933 Shapley H.
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Galactic and Extragalactic Studies: XVIII. The Pulse Index for Eighty-Nine Variable Stars in the Magellanic Clouds. [PDF]
Proc Natl Acad Sci U S A, 1948 Shapley H.
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The Relationship of Spectral Type to Period among Variable Stars. [PDF]
Proc Natl Acad Sci U S A, 1927 Adams WS, Joy AH.
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Galactic and Extragalactic Studies: II. Notes on the Peculiar Stellar Systems in Sculptor and Fornax. [PDF]
Proc Natl Acad Sci U S A, 1939 Shapley H.
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Summary of a Variable Star Survey in an External Galaxy. [PDF]
Proc Natl Acad Sci U S A, 1933 Shapley H, Mohr J.
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The Absolute Magnitudes of Long Period Variable Stars. [PDF]
Proc Natl Acad Sci U S A, 1928 Gerasimovic BP.
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