<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AT MARCH 31, 1997 (UNAUDITED), JUNE 30, 1997 (UNAUDITED) AND SEPTEMBER
SEPTEMBER 30, 1997 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY
PERIOD ENDED MARCH 31, 1997 (UNAUDITED), JUNE 30, 1997 (UNAUDITED) AND SEPTEMBER
30, 1997 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS INCLUDED AS PART OF ITS QUARTERLY REPORT ON FORM 10-Q FOR
THE PERIOD ENDED MARCH 30, 1997, JUNE 30, 1997 AND SEPTEMBER 30, 1997.
</LEGEND>
<PERIOD-TYPE> 3-MOS 6-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-1997 DEC-31-1997 DEC-31-1997
<PERIOD-START> JAN-01-1997 JAN-01-1997 JAN-01-1997
<PERIOD-END> MAR-31-1997 JUN-30-1997 SEP-30-1997
<CASH> 658,115 663,656 697,143
<SECURITIES> 0 0 0
<RECEIVABLES> 341,736 340,972 353,985
<ALLOWANCES> 0 0 0
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 999,851 1,004,629 1,051,128
<PP&E> 17,562,734 17,471,632 17,318,635
<DEPRECIATION> 6,764,460 6,982,364 7,169,395
<TOTAL-ASSETS> 11,798,125 11,493,896 11,200,368
<CURRENT-LIABILITIES> 0 0 0
<BONDS> 0 0 0
<PREFERRED-MANDATORY> 0 0 0
<PREFERRED> 0 0 0
<COMMON> 0 0 0
<OTHER-SE> 11,798,125 11,493,896 11,200,368
<TOTAL-LIABILITY-AND-EQUITY> 11,798,125 11,493,896 11,200,368
<SALES> 0 0 0
<TOTAL-REVENUES> 329,422 685,260 1,040,031
<CGS> 0 0 0
<TOTAL-COSTS> 264,904 531,729 796,068
<OTHER-EXPENSES> 0 0 0
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> 0 0 0
<INCOME-PRETAX> 83,744 0 0
<INCOME-TAX> 0 0 0
<INCOME-CONTINUING> 0 0 0
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> 83,744 152,876 257,213
<EPS-PRIMARY> 0 0 0
<EPS-DILUTED> 0 0 0