Source Persons Title Role Grace, Alfred Fitzwalter author Maartje Stols-Witlox other Records Title Page(s) in source On different methods of preparing canvas., 86-87 UNKNOWN 87 UNKNOWN 87 UNKNOWN 87-88 UNKNOWN 87-88 UNKNOWN 87-88 UNKNOWN 88 UNKNOWN 88 UNKNOWN 89 Library (geocoded): Place of edition (geocoded):