<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> JUN-30-1998 <CASH> 567,765 <SECURITIES> 0 <RECEIVABLES> 12,068 <ALLOWANCES> 2,776 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 677,367 <DEPRECIATION> 675,732 <TOTAL-ASSETS> 578,897 <CURRENT-LIABILITIES> 0 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 572,058 <TOTAL-LIABILITY-AND-EQUITY> 578,897 <SALES> 0 <TOTAL-REVENUES> 216,872 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 67,273 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 588,948 <INCOME-TAX> 0 <INCOME-CONTINUING> 588,948 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 588,978 <EPS-PRIMARY> 17.40 <EPS-DILUTED> 17.40