Physicians: Dr. Velten, Dr. Wetzlar, Dr. Brandis, Dr. Diemer, Dr. Sträter, Dr. Reumont, and Dr. Velten, jun., all speak English. 1868, “Sect. IV.—Prussia.—Northern Germany.—The Rhine. Route 36”, in A Handbook for Travellers on the Continent: Being a Guide to Holland, Belgium, Prussia, Northern Germany, and the Rhine from Holland to Switzerland. […], Sixteenth edition, London: John Murray, page 246: