Descartes' Secret Notebook. Amir D. Aczel. Broadway Books, 2009. - Includes lots of gossip!

Religion and the Enlightenment. James M. Byrne. Westminster John Knox Press, 1997. - Nice overview of religion in the Enlightenment!

The Swerve. Stephen Greenblatt. W.W. Norton & Co., 2012. - Pulitzer Prize and National Book Award Winner tells the story of the recovery of Lucretius' philosophical poem On The Nature of Things which fueled the Renaissance.

Heretics!: The Wondrous (and Dangerous) Beginnings of Modern Philosophy. Steven Nadler and Ben Nadler. Princeton University Press, 2017. - A graphic novel about Enlightenment philosophy, written by a top philosopher of the era!

Christianity, Book-Burning and Censorship in Late Antiquity: Studies in Text Transmission. Dirk Rohmann. Baylor University Press, 2017. - A history of the destruction of Ancient Greek philosophy in Europe.

Aristotle's Children: How Christians, Muslims, and Jews Rediscovered Ancient Wisdom and Illuminated the Middle Ages. Richard Rubenstein. Harcourt, 2003. - Tells the story of the recovery of the works of Aristotle in Christian Europe.

Descartes' Bones: A Skeletal History of the Conflict Between Faith and Reason. Russell Shorto. Vintage, 2009. - Interesting book!

The Works of George Berkeley, Bishop of Cloyne. Edited by A. A. Luce and T. E. Jessop. 9 volumes. London: Thomas Nelson and Sons, 1948-1957.
A standard biography is A. A. Luce, The Life of George Berkeley (Thomas Nelson and Sons, 1949).

Oeuvres de Descartesin 11 vols. Adam, Charles, and Tannery, Paul, eds. Paris: Librairie Philosophique Vrin.  - this is the standard edition in French. Other editions of better quality often refer to this editions pagination, and refer to it as "AT". This makes it convenient to find the passage being discussed in books and articles about Descartes. This edition is available for free online!

The Philosophical Writings Of Descartes in 3 vols. Cottingham J, Stoothoff R, Kenny A, and Murdoch D, trans. Cambridge University Press, 1983. - this is the current standard edition of Descartes translated into English.

The Philosophical Works of Descartes in 2 vol.s. Haldane, Elizabeth and Ross, G. R. T. Cambridge University Press, 1934. - this was the standard edition of Descartes' works translated into English prior to  the Cottingham edition.

The standard biography is Stephen Gaukroger, Descartes: An Intellectual Biography (Oxford University Press, 1995).

A definitely NOT standard edition is Descartes Meditations, Bro: A Retelling of Meditations on First Philosophy, by Tommy Maranges. ?, 2015. - the Meditations with a striking amount of cussing and contemporary slang added.

Her letters in French are reprinted in  Descartes' works by Adam and Tannery.

The Correspondence between Princess Elisabeth of Bohemia and Rene Descartes, Shapiro, Lisa, ed. University of Chicago Press, 2007. - This is the only complete English edition in print.

Clarendon Hume Edition Series. Norton, David Fate, Beauchamp, T. L., et al, ed.s. Oxford University Press, 1999 - . - These are still in the process of being published.

Prior to the Clarendon series, the standard editions of Hume's Treatise and Enquiries were those edited by L. A. Selby-Bigge (and updated by P. H. Nidditch) for Oxford University Press, first published in the late 19th century.

The standard editions of Hume's letters are: The Letters of David Hume in 2 vol.s. Greig, J. Y. T., ed. Oxford University Press, 1932; and New Letters of David Hume, Kilbansky, Raymond and Mossner, Ernest Campbell, ed.s. Oxford University Press, 1954.

The standard biography of Hume is The Life of David Hume by Ernest Campbell Mossner, now in a second edition (Oxford University Press, 2001). Not the most exciting read, but Hume lived an interesting life.

The first complete edition of the works of Immanuel Kant translated into English will be The Cambridge Edition of the Works of Immanuel Kant, published by Cambridge University Press. It began publication in 1992, and is still in the process of being created.

The standard biography is Manfred Kuehn, Kant: A Biography, (Cambridge University Press, 2002).

The standard German edition of Kant's works is called the Academy edition of Kant's Collected Writings in 29 volumes, begun by Wilhelm Dilthey in 1894. It is currently published by Walter de Gruyter, and the first 23 volumes are available online for free.

There is no complete version of Leibniz' works translated into English. The most complete selection was edited by Larry Loemker, Philosophical Papers and Letters in 2 volumes. (University of Chicago Press, 1956). Though not making any attempt to provide a complete edition, the Yale Leibniz Series, from Yale University Press, includes some very high quality editions of selections of Leibniz's philosophical works in English translation with the original German included on facing pages. The standard biography is Maria Rosa Antognazza, Leibniz: An Intellectual Biography, (Cambridge University Press, 2011).

The standard edition in German is Gottfried Wilhelm Leibniz Sämtliche Schriften und Briefe. The project began in 1923 and is still underway. It is currently  published by De Gruyter.

The standard edition of Locke's works is the Clarendon Edition of the Works of John Locke, which will eventually contain 37 volumes. The series began in 1975, and is still being produced by Oxford University Press. The previous standard edition was The Works of John Locke, 10 volumes, (Thomas Tegg, 1823).
A standard biography is Roger Woolhouse, Locke: A Biography, (Cambridge University Press, 2008). The previous standard biography (now dated due to discoveries of much previously unknown material by Locke) was Maurice Cranston, John Locke: A Biography, (MacMillan, 1957).

Women Philosophers of the Early Modern Period. Margaret Atherton. Hackett, 1994.

Women Philosophers of Seventeenth-Century England: Selected Correspondence. Jacqueline Broad. Oxford University Press, 2019. Includes correspondence from Elizabeth of Bohemia, Margaret Cavendish, Anne Conway, Mary Astell Damaris Masham, and Catharine Trotter Cockburn.

Women Philosophers of Eighteenth-Century England: Selected Correspondence. Jacqueline Broad. Oxford University Press, 2020. Includes correspondence from Mary Astell, Elizabeth Thomas, and Catharine Trotter Cockburn.

An Unconventional History of Western Philosophy: Conversations Between Men And Women Philosophers. Karen J. Warren. Rowman & Littlefield, 2009. - large anthology including the works of women philosophers with the often more well-known male philosophers they worked with.