<ARTICLE>5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> SEP-30-1996 <CASH> 27075573 <SECURITIES> 0 <RECEIVABLES> 1990704 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 166551858 <DEPRECIATION> 100120408 <TOTAL-ASSETS> 95527497 <CURRENT-LIABILITIES> 0 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 94338047 <TOTAL-LIABILITY-AND-EQUITY> 95527497 <SALES> 0 <TOTAL-REVENUES> 12154981 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 10242623 <LOSS-PROVISION> 192917 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 1719441 <INCOME-TAX> 0 <INCOME-CONTINUING> 1719441 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1719441 <EPS-PRIMARY> 0.93 <EPS-DILUTED> 0