Three letters from the Association of Poles in Austria (Verband der Polen in Österreich) in Salzburg (Austria) to Simon Wiesenthal, requesting information about the results of his intervention regarding the damaged memorial on the Ebensee (Austria) cemetery; inviting Wiesenthal for the celebration of the 10th anniversary of liberation from concentration camps; and inviting SW to the jubilee celebrations of the 10th anniversary of founding the Association of Poles in Austria, from 9 March, 1955 and 6 October, 1956