The letters relate to royalties, fees and other administrative matters for a series of selected classics in the Britannica Great Books Series:
The Tragedies of Sophocles by Jebb, R.C.
The Thirteen Books of Euclid's Elements and The Works of Archimedes by Heath, T.L.
The Philosophical Works of Descartes by Haldane, E.S. and Ross, G.R.T.
The Servant of Two Masters by Goldoni, C. translated by Dent, E.J.
The Platonic Epistles translated by Harward, J.
Newton's Mathematical Principles translated by Motte, A.
Fourier's Analytical Theory of Heat translated by Freeman, A.