BTN regrets omitting Linden Travel Bureau Inc. of New York from its 2001 Business Travel Survey of corporate-owned travel agencies (BTN, May 28). Had it been included in that list, Linden, with Airlines Reporting Corp. sales of $72 million in 2000, would have tied with 59th ranked CTS/Cassis Travel Service Inc. of Los Angeles. Corporate bookings accounted for 70 percent of Linden's volume, and international bookings made up 60 percent of the total.