I have a few of these, I'll post them as I can. This is actually an American postcard, celebrating the first voyage of the U-Kreuzer Deutschland to America, in July 1916. Check out the postage rates, 2 cents to anywhere in the world! From Wiki: Deutschland departed on her first voyage to the US on 23 June 1916 commanded by Paul König, formerly of the North German Lloyd company. She carried 750 tons of cargo in total, including 125 tons of highly sought-after chemical dyes, mainly Anthraquinone and Alizarine derivatives in highly concentrated form, some of which were worth as much as $1,254 a pound in 2005 money. She also carried medical drugs, mainly Salvarsan, gemstones, and mail, her cargo being worth $1.5 million in total. Passing undetected through the English Channel she arrived in Baltimore on 9 July 1916 (some sources say 7 July) after just over two weeks at sea. A photograph by Karle Netzer dates the arrival 10 July ('erreichte Baltimore Hafen 10 Juli 1916'). During their stay in the US, the German crewmen were welcomed as celebrities for their astonishing journey and even taken to fancy dinners. American submarine pioneer Simon Lake visited the Deutschland while she was in Baltimore, and made an agreement with representatives of the North German Lloyd line to build cargo submarines in the US, a project which never came to fruition. She stayed at Baltimore until 2 August, when she sailed for Bremerhaven, arriving on 24 August with a cargo of 341 tons of nickel, 93 tons of tin, and 348 tons of crude rubber (257 tons of which were carried outside the pressure hull). Her cargo was valued at $17.5 million, several times the submarine's construction costs. She had traveled 8,450 nmi (15,650 km/9,720 mi), having been submerged for 190 nmi (350 km/220 mi) of them.