I have several medieval cookbooks. Or histories of medieval cookbooks with recipes. I think I got The Forme of Curry on kindle for free. (Not exactly a read-in-bed type of book.)
But I do love the Williamsburg cookbook. Beautifully done.
Also have SALT ( the history of salt; it IS fascinating! ), FOOD IN HISTORY, IN THE DEVIL'S GARDEN (it's about once forbidden to eat foods ), and ones about what was eaten and recipes for dishes eaten in Ancient Rome and one on Ancient Greek dishes.