Pope and Mandeville
Mandeville, Bernard. “An Enquiry into the Origin of Moral Virtue” (1714) [including the Introduction]. In The Fable of the Bees, vol. 1, ed. F. B. Kaye, 39-57. Oxford: Clarendon, 1957.
The same edition can be found at the online library of the Liberty Fund. You can search at oll.libertyfund.org. or check the link here-
You can also use the photocopy available at Crystal.
From Moral Essays: Epistle II. ‘To a Lady: Of the
Characters of Women’; Epistle IV. ‘Of the Use of Riches: To Richard Boyle, Earl of Burlington’.
‘Epistle to Dr. Arbuthnot’.
Butt, John, ed. The Poems of Alexander Pope: A One-Volume Edition of The Twickenham Text With Selected Annotations. New Haven: Yale University Press, 1963.
The same text, based on the Twickenham edition, is also available in other editions by Methuen, Routledge etc. that may be available in the library.
For a general introduction to the eighteenth century, you could read --
Ford, Boris. The New Pelican Guide to English Literature, Vol. IV, From Dryden to Johnson. Harmondsworth: Penguin, 1982.
For a general introduction to Pope,
Baines, Paul. The Complete Critical Guide to Alexander Pope. London: Routledge, 2000.