Response Boosters Give Mailing Impact

Inside the carrier is an 8.5-inch-by-14-inch, double-sided letter with a detachable reply device at the bottom. The letter is printed on yellow paper in typewriter font and is response booster No. 2: an urgent appeal. At the top of the letter, just below the WWF logo, is the header “Tiger Emergency Update” and the words “Urgent Dispatch.” The letter’s salutation includes a TO, FROM and RE; the RE reads, “Tigers Under Siege.”