I'm rereading Asimov's complete saga in "internal story chronological order":
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I, Robot / The Complete Robot (except 'Mirror Image'!) [ROBOTS]
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The Caves of Steel [ROBOTS]
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The Naked Sun [ROBOTS]
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Mirror Image (short story) [ROBOTS]
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The Robots of Dawn [ROBOTS]
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Robots and Empire [ROBOTS]
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The Stars, Like Dust-- [EMPIRE]
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The Currents of Space [EMPIRE]
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Pebble in the Sky [EMPIRE]
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Prelude to Foundation [FOUNDATION]
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Forward the Foundation [FOUNDATION]
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Foundation [FOUNDATION]
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Foundation and Empire [FOUNDATION]
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Second Foundation [FOUNDATION]
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Foundation's Edge [FOUNDATION]
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Foundation and Earth [FOUNDATION]
I'm currently on "Forward the foundation"