<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> SEP-30-1996 <CASH> 145,814 <SECURITIES> 0 <RECEIVABLES> 35,153 <ALLOWANCES> 24,148 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 2,001,362 <DEPRECIATION> 1,777,008 <TOTAL-ASSETS> 518,970 <CURRENT-LIABILITIES> 0 <BONDS> 0 <COMMON> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 508,268 <TOTAL-LIABILITY-AND-EQUITY> 518,970 <SALES> 0 <TOTAL-REVENUES> 255,544 <CGS> 0 <TOTAL-COSTS> 250,222 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 197,363 <INCOME-TAX> 0 <INCOME-CONTINUING> 197,363 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 197,363 <EPS-PRIMARY> 0 <EPS-DILUTED> 0