<ARTICLE> 5 <MULTIPLIER> 1 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> MAR-31-1998 <CASH> 3,138,334 <SECURITIES> 0 <RECEIVABLES> 0 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 3,138,334 <PP&E> 22,395,185 <DEPRECIATION> 19,457,911 <TOTAL-ASSETS> 6,075,608 <CURRENT-LIABILITIES> 490,886 <BONDS> 0 <COMMON> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 5,584,722 <TOTAL-LIABILITY-AND-EQUITY> 6,075,608 <SALES> 7,765,806 <TOTAL-REVENUES> 7,817,662 <CGS> 0 <TOTAL-COSTS> 372,936 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 7,444,726 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 7,444,726 <EPS-PRIMARY> .51 <EPS-DILUTED> .51