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' bic L HY 166-3211 ADMINISVAATIVE (cont'd) On 3/31/71, LOIS YOHONN, Attorney, Securities and Exchanze Commission (SEC) Federal Building, 26 Federal Plaza, NY, NY, advised the SEC is familiar with several stockbrokers who have been involved in an attempted manipulation of Computer Fields Expressway stock. YOHONN advised the SA MORVELLO xpres with the germane records of the Computer Fields Expressway stock which would aid in establishing the violation in this matter. YOHONN stated that JACK POURTNEY, the President of lst William Street Corporation, NYC, has been cooperating with the S&C on this matter. . iain AUSA MORVELLO a It_is_ noted It is noted tnat AUSA MORVELLO was furnished the informant information in captioned matter by letter, as it is essential the AUSA be aware of this information in order to successfully prosecute this matter. Cnr 7 4 hat Le A LEADS NEW YORK AT NEW YORK CITY 1. Will continue efforts to develop a prosecutive violation re captioned subjects. . 2. Will continue efforts to fully identify all individuals involved in this matter. - g* - COVER PAGE