Neiman-Marcus Group Inc. has completed its previously...

Neiman-Marcus Group Inc. has completed its previously reported acquisition of privately held Horchow Mail Order Inc. of Dallas for about $125 million in cash . . . The Chicago Sun-Times’ editorial staff authorized a strike after the newspaper’s management proposed to cut salaries by 10% . . . Egghead Discount Software said Sears, Roebuck & Co. will put “Egghead in Sears” computer software outlets in eight of its department stores this year as part of a test of selling more brand-name merchandise . . . McKesson Corp. and Alco Health Services Corp. said they have dropped their merger agreement because of opposition by the Federal Trade Commission . . . Goodyear Tire & Rubber Co. reported that its third-quarter earnings could be as low as $1.10 a share, compared to $2.98 a share of income from continuing operations in the 1987 period, which included 88 cents a share of extraordinary items.