<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> MAR-31-1997 <CASH> 404,900 <SECURITIES> 0 <RECEIVABLES> 123,890 <ALLOWANCES> 4,975 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 2,993,030 <DEPRECIATION> 2,953,192 <TOTAL-ASSETS> 565,681 <CURRENT-LIABILITIES> 0 <BONDS> 0 <COMMON> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 518,682 <TOTAL-LIABILITY-AND-EQUITY> 565,681 <SALES> 0 <TOTAL-REVENUES> 216,493 <CGS> 0 <TOTAL-COSTS> 86,181 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 130,312 <INCOME-TAX> 0 <INCOME-CONTINUING> 130,312 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 130,312 <EPS-PRIMARY> 0 <EPS-DILUTED> 0