Digital Manuscripts
Romance of Alexander. c. 1338-1400. Bodleian Library, MS. Bodl. 264
Various Works of Christine de Pisan. c. 1410-1414. The British Library, Harley 4431
Chroniques de France ou de St. Denis. After 1380. The British Library, Royal 20 C VII
Roman de la Rose. c. 1340-1360. Bibliothèque nationale de France, manuscript français 1567
Tacuinum sanitatis c. 1390-1400. Bibliothèque nationale de France NAL 1673
Primary Sources
Some of these manuscripts have been published in multiple editions and may also be available online. I have linked to either general information about the manuscript, an online edition, or the edition I own.
Très Riches Heures du Duc de Berry
Lancelot du Lac et la Quête du Graal
The Medieval Health Handbook: Tacuinum Sanitatis.
The Hunting Book of Gaston Phebus
The Forme of Cury: A Roll of Ancient English Cookery Compiled, about A.D. 1390
Secondary Sources
Medieval Finds from Excavations in London Series published by Boydell & Brewer.
Woven into the Earth: Textile finds in Norse Greenland by Else Ostergard
Medieval Garments Reconstructed: Norse Clothing Patterns by Lilli Fransen, Shelly Nordtorp-Madson, Anna Norgard, and Else Ostergard
Fashion in the Age of the Black Prince by Stella Mary Newton
The Art of Cookery in the Middle Ages by Terance Scully