General Post Office of the North German Confederation: State postal steamship connection 1869 between Germany and Sweden on the Stralsund-Malmö line (shortest sea route)
British Library Philatelic Collection
with portraits of the Dutch stamp designers and their stamps
the ideal complement to Mayer's handbook #63329
587th Auction
Boehm, F., Die Plattenfehler der Berliner Bautenserie, Band 1-3, 1 ... AUT-Ahrens General Post Office of theBoehm, F., The plate errors of the Berlin building series, volumes 1 3, 1990, the large 3 volume edition with detailed enlargements with detailed description and sketches of the position in the sheet, approx. 1500 pages, rare, first copy offered by us, very well preserved, ex Schmidt #68931