Deutschland / Germany, Russland / Russia, Weltraum / Space, Astronomie / Astronomy cover to library of the Kaiserlichen Sternwarte (Imperial  Observatory) Pulkowo by St. Petersburg, Russia; from Christian Grummann & Sohn, Lübeck 18.5.1839 without stamps; the letter inside gives some sending information from a box of books sending from publisher Leopold Voß, Leipzig, Germany to the library in Pulkowo (see 2. scan)

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