<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1995 <PERIOD-END> JUN-30-1995 <CASH> 631,348 <SECURITIES> 0 <RECEIVABLES> 146,697 <ALLOWANCES> 18,725 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 9,388,285 <DEPRECIATION> 8,152,600 <TOTAL-ASSETS> 2,031,892 <CURRENT-LIABILITIES> 0 <BONDS> 0 <COMMON> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 1,990,591 <TOTAL-LIABILITY-AND-EQUITY> 2,031,892 <SALES> 0 <TOTAL-REVENUES> 649,664 <CGS> 0 <TOTAL-COSTS> 531,668 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 117,996 <INCOME-TAX> 0 <INCOME-CONTINUING> 117,996 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 117,996 <EPS-PRIMARY> 0 <EPS-DILUTED> 0