The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Old Castle and Black Gate. Newcastle on Tyne. Hartmann. 1904
Newcastle. Castle and Black Gate. Ruddock. 1904
Newcastle. Black Gate. Auty Series. G. H. W. B. 1904
Newcastle on Tyne. The Black Gate. T. and G. Allan Series. 1904
Newcastle Upon Tyne. The Black Gate and the Keep. Newcastle City Libraries. City Engineer
Newcastle upon Tyne. Black Gate and Castle Keep. The Society of Antiquaries of Newcastle upon Tyne
Black Gate. Newcastle. Ruddock. Grand Series. Newcastle on Tune. 1906
Newcastle Upon Tyne. St. Nicholas Cathedrale From the Black Gate. Bamforth