Letter listing for 1740–1749
- Pietro Ercole Gherardi to Lodovico Antonio Muratori, 17 April 1749
- Rolland Puchot, comte Des Alleurs to Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy], 17 April 1749
- Receipt for Young's sale of copyright to the Night-Thoughts, parts 7–9, and A Paraphrase on Part of the Book of Job to Andrew Millar for £63, 7 April 1749 by Edward Young for Robert Dodsley, 18 April 1749
- Pietro Ercole Gherardi to Lodovico Antonio Muratori, 19 April 1749
- Cardinal Fortunato Tamburini to Lodovico Antonio Muratori, 19 April 1749
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, 20 April 1749
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Jean François de Saint-Lambert, marquis de Saint-Lambert, 20 April 1749
- Edward Young to Caroline Haviland [née Lee], 20 April 1749 [inferred existence]
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Jean François de Saint-Lambert, marquis de Saint-Lambert, 21 April 1749
- David Hume to Charles Louis de Secondat, baron de Montesquieu, 21 April 1749
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, 22 April 1749
- Lodovico Antonio Muratori to Cardinal Fortunato Tamburini, 23 April 1749
- Pietro Ercole Gherardi to Lodovico Antonio Muratori, 24 April 1749
- Lodovico Antonio Muratori to Nicola Tacoli, 24 April 1749
- Lodovico Antonio Muratori to Nicola Tacoli, 24 April 1749
