Show Mellon Income Tax Probe I Delayed by Appeals Board PITTSBURGH Feb 18 UP The Ri-The The board of tax appeals today postponed postponed post post- until tomorrow arguments to quash calling for tor the records records records rec rec- of two Mellon-dominated Mellon concerns concerns con con- con I cerns at the inquiry into the former l secretary of ot the treasury's income I tax affairs The postponement was requested b by by- attorneys for Cor the Union Trust company and the Pittsburgh Coal company |