Book: Copeland, Robert. 1999 Spode's Willow Pattern and other Designs after the Chinese.
• Long bridge pattern by Spode: pp. 119-24 and Glossary. Pearlware and stone china versions.Book: Drakard, David & Holdway, Paul. 2002 Spode Transfer Printed Ware 1784-1833.
• Same central reserve pattern on plate: p. 206, no. P619, Long Bridge pattern, noting used by several potters, tentative attribution to Spode.