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» c Qn April 19, 1943, information was received from Source _who advised that he had met EISLER at a function at the home a short time agoe Source Tl stated that no in- on a nature had been developed regarding EISLAR, other than the fact that he was known to the VIERTEIs, BRECHTs and others, whose Com- wunist tendencies are known to this source * of informations A mail cover placed on matter received b — + _ _ and since GERHART EISLER is a imown contact of OTTO KATZ, alieged GPU Agent in Mexico City, Tee een ae Doing oot ont as being of possible iapertancee XW | cobenriat