0000912057-01-532968 424B5 1 20010921 SL GREEN REALTY CORP 0001040971 6798 133956775 MD 1231 424B5 33 333-68828 1741683 420 LEXINGTON AVENUE NEW YORK NY 10170 2125942700 420 LEXINGTON AVENUE NEW YORK NY 10170 424B5 1 a2059502z424b5.txt 424B5