<ARTICLE> 5 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 2,102,494 <SECURITIES> 0 <RECEIVABLES> 370,479 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 2,472,973 <PP&E> 50,631,214 <DEPRECIATION> 43,339,081 <TOTAL-ASSETS> 9,765,106 <CURRENT-LIABILITIES> 247,459 <BONDS> 2,677,520 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 6,840,927 <TOTAL-LIABILITY-AND-EQUITY> 9,765,106 <SALES> 0 <TOTAL-REVENUES> 3,335,253 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 4,829,089 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 268,916 <INCOME-PRETAX> 1,762,752 <INCOME-TAX> 0 <INCOME-CONTINUING> 1,762,752 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,762,752 <EPS-PRIMARY> 0 <EPS-DILUTED> 0