=+6.19 The Los Angeles Times (June 14, 1995) reported that the U.S. Postal Service is getting speedier, with higher overnight on-time delivery rates than in the past. Postal Service standards call for overnight delivery within a zone of about 60 mi for any first-class letter deposited by the last collection time posted on a mailbox. Two-day delivery is promised within a 600-mi zone, and three-day delivery