Not a culinary historian, just bored at work. Here's what I found:
At alibris.com, "La Vie de Vatel" by Maura Jean-Louvet, 237 pages, available for $33.50
At the New York Public Library, "Les Grands Maitres de la Cuisine Francaise du Moyen Age a Alexandre Dumas" by Vence, Celine & Robert J. Courtine, Paris, Bordas, 1972. #JFF94-2869. The library has a great culinary research guide online.
A brief, but interesting translation of an account of the death of Vatel by Madame de Savigne, written in 1671. The link is below.