<ARTICLE> 5 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> DEC-31-1997 <CASH> 191,228 <SECURITIES> 0 <RECEIVABLES> 28,857 <ALLOWANCES> (3,227) <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 1,295,164 <DEPRECIATION> (1,291,640) <TOTAL-ASSETS> 221,295 <CURRENT-LIABILITIES> 0 <BONDS> 0 <COMMON> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 204,341 <TOTAL-LIABILITY-AND-EQUITY> 221,295 <SALES> 0 <TOTAL-REVENUES> 670,068 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 386,221 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 343,294 <INCOME-TAX> 0 <INCOME-CONTINUING> 343,294 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 343,294 <EPS-PRIMARY> 5.73 <EPS-DILUTED> 5.73