This lamp was created in a displaced-persons camp after World War II. The residents were receiving vocational training from ORT, a Jewish organization active throughout Europe. Begun in Russia in 1880 to provide funds for needy Jews, by the 1920s ORT had turned to training Jews in manual labor as a means of changing their economic conditions.
The lamp is dedicated to General Joseph T. McNarney, who served as the Commander in Chief of United States Forces in the European Theatre from November 1945 to March 1947. As such, he was responsible for the displaced persons camps in Germany and Austria. This lamp was presented to him shortly after he took office, perhaps at a visit to the camp. McNarney was considered kindhearted and humane, and when Jews fleeing postwar pogroms in Poland infiltrated illegally into the American-controlled sector, he granted them shelter and care. In addition, General McNarney enabled the publication of a complete edition of the Talmud to meet the thirst for Jewish education among surviving European Jews. Acceding to the impassioned plea of Rabbi Philip S. Bernstein, the American advisor on Jewish affairs, McNarney scrounged for scarce paper, imported sets of the Talmud from America to make offset copies, and requisitioned a printing plant to publish the edition, which came out in 1948.
The Hebrew inscription on the lamp, "A great miracle happened there," is found on the tops or dreidls that children play with on Hanukkah in Ashkenazi communities. It refers to the miracle of Hanukkah, but may in this instance also poignantly signify the liberation and salvation of the Jews in the DP camp.
This lamp was displayed at the White House during President Barack Obama's remarks at the 2011 Hanukkah celebration at the White House, learn more about it here: https://obamawhitehouse.archives.gov/blog/2011/12/26/hanukkah-white-house-history-2011-menorah>