WList of stamp cataloguesWStamp catalogWAustria Netto KatalogWBarefoot CatalogueWMount Brown (philatelist)WMartin ErlerWFacit catalogWAlfred ForbinWJB CatalogueWMa's Illustrated Catalogue of the Stamps of ChinaWMichel catalogWSakura catalogWStanley Gibbons catalogueWYvert et TellierWZumstein catalog