<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> SEP-30-1997 <CASH> 3,929,707 <SECURITIES> 0 <RECEIVABLES> 546,409 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 80,797,267 <DEPRECIATION> (52,014,192) <TOTAL-ASSETS> 38,991,630 <CURRENT-LIABILITIES> 0 <BONDS> 38,072,275 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 0 <TOTAL-LIABILITY-AND-EQUITY> 38,991,630 <SALES> 11,737,096 <TOTAL-REVENUES> 14,872,561 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 8,763,021 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 2,866,681 <INCOME-PRETAX> 3,242,859 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 533,764 <CHANGES> 0 <NET-INCOME> 3,776,623 <EPS-PRIMARY> 0 <EPS-DILUTED> 0