Göteborgs Handels- och Sjöfartstidning – 4 december 1868, sida 4

Stor-Britannien. Tidningar och Annonser. William Porteous Å C0o., Exchange Place, Glasgow, a loug established wellknown firm, dispatch Nevspapers to Subscribers and procure Advertisements inserted on best terms in all the British and American Journals. IIi89591