<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1996 <PERIOD-END> SEP-30-1996 <CASH> 3,091,283 <SECURITIES> 0 <RECEIVABLES> 3,581,152 <ALLOWANCES> 5,000 <INVENTORY> 0 <CURRENT-ASSETS> 6,667,435 <PP&E> 12,489,223 <DEPRECIATION> 10,447,534 <TOTAL-ASSETS> 8,709,124 <CURRENT-LIABILITIES> 4,896,672 <BONDS> 261,911 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 3,550,541 <TOTAL-LIABILITY-AND-EQUITY> 8,709,124 <SALES> 3,339,961 <TOTAL-REVENUES> 4,388,818 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 1,821,070 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 69,165 <INCOME-PRETAX> 2,498,583 <INCOME-TAX> 0 <INCOME-CONTINUING> 2,498,583 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 2,498,583 <EPS-PRIMARY> 0 <EPS-DILUTED> 0