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Russell's American almanack, for the year of our redemption, 1780. : ... Calculated by art, for the meridian of Boston, New-England, lat. 42' 25⁰ [sic] n. but may, without any sensible error, serve for most of the other American states. ... (These calculations were purchased from ... Benjamin West ...)
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An almanack, for the year of Christian aera, 1789 : ... Calculated for the meridian of Boston, in America, lat. 42 deg. 25 min. north
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