A recent poll of American Express offices overseas reveals that the merchandising efforts of U.S. Travel Service through press. advertising. international trade fairs. and travel clinics are paying offpredicting increased success for the U.S. Travel Service in its second year. Group travel. professional groups. and packaged sales are up 5 to 25 percent in London. Paris. Edinburgh. Frankfurt. Glasgow. Amsterdam. Bern. Copenhagen. Lucerne. Naples. Rome. Vienna. and Zurich. The greatest volume impact is felt in the United Kingdom. France. and Western Germany. Visa issuances are up 20 percent in London. according to the U.S. Embassy. with 75.000 visitors from Great Britain expected in 1962. U.S.