<ARTICLE> 5 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 454,501 <SECURITIES> 0 <RECEIVABLES> 414,688 <ALLOWANCES> 42,753 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 45,101,407 <DEPRECIATION> 24,222,527 <TOTAL-ASSETS> 30,514,718 <CURRENT-LIABILITIES> 1,647,915 <BONDS> 23,624,588 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 5,242,215 <TOTAL-LIABILITY-AND-EQUITY> 30,514,718 <SALES> 0 <TOTAL-REVENUES> 18,338,834 <CGS> 0 <TOTAL-COSTS> 17,802,658 <OTHER-EXPENSES> 85,528 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,521,275 <INCOME-PRETAX> 10,493,520 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 10,493,520 <EPS-PRIMARY> 119.47 <EPS-DILUTED> 119.47