A guide through the Royal Porcelain Works, Worcester, and an epitome of the history of pottery and porcelain with the marks on Worcester porcelain (1878)
Royal Porcelain Works (Worcester, England) · Worcester : The Works · leaf 4
THE PRODUCTIONS OF The Royal Porcelain Works May be obtained of the principal China Dealers throughout the World. … The registered Trade Mark which will be found on every piece either impressed in the ware or printed on the glaze.
Worcester porcelain · Pottery · Porcelain
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.