March Impromptu Code, the document alledgedly containing a code message from Martin Bormann to the leaders of the Nazi terror group Werwolven. This document was made available to the public for research purposes. The bottom of the image indicates the original score was from Collection Litolff No. 1189; this was published by Henry Litolff's verlag in Braunschweig, Germany in 1881 and credited to Josef Löw.<a rel="nofollow" class="external autonumber" href="http://www.dismarc.org/index.php?form=display&amp;oaiid=MAR%3APRINTED_MUSIC%2F000000112361&amp;db=0">[1]</a><a rel="nofollow" class="external autonumber" href="http://www.worldcat.org/oclc/498297902">[2]</a>  Löw's "Marsch Impromptu" may also have been published as part of <i>Teacher and pupil : a practical course of four-hand piano playing</i> by Schirmer in New York in 1893.  News reports<a rel="nofollow" class="external autonumber" href="https://blogunireunion.wordpress.com/schlagzeile-der-woche/marsch-impromptu-eine-geheime-partitur/">[3]</a> however credit an 1876 work of the same name published in the U.S. by Gottlieb Federlein (1835 - 1922); however the Library of Congress deposit sample<a rel="nofollow" class="external autonumber" href="http://lcweb2.loc.gov/diglib/ihas/loc.music.sm1876.00876/default.html">[4]</a> does not seem to match.  Gottfried Federlein (1883 - 1952) is sometimes credited, but appears to be Gottlieb's son and not related to the work in question.  More discussion <a href="//commons.wikimedia.org/wiki/Commons:Deletion_requests/File:March_Impromptu_Code.jpg" title="Commons:Deletion requests/File:March Impromptu Code.jpg">here</a>.
<p><a href="//commons.wikimedia.org/wiki/User:Karl_Hammer" title="User:Karl Hammer">Karl Hammer</a><br></p>
Original score: Either <a href="https://de.wikipedia.org/wiki/Josef_L%C3%B6w" class="extiw" title="de:Josef Löw">Josef Löw</a> (1834 - 1886) or Gottlieb Federlein (1835 - 1922)
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>