Astronomical Dialogues Between a Gentleman and a Lady

John Harris ([1667]-1719).
Astronomical Dialogues Between a Gentleman and a Lady... London: Printed by T. Wood for B. Cowse, 1719.
(RARE) QB 42 .H2 1719

Harris wrote the first English encyclopedia, published in 1704. Ephraim Chambers wrote another encyclopedia, published in 1728, that was widely used in the 18th century.