Untied Knots

Within the pages of Untied Knots ... • a 9-hour train trip through central Mexico turns into a 37-hour ordeal • visitors to lively port of Veracruz enjoy sounds and sights of Old Mexico • three hotel clerks must eject unwanted visitor, deal with feuding couple, and placate angry racist • Midwestern couple takes circuitous three-country trip to Mexico City, with no home to return to afterward • developers of early computer system obtain a surprising client • low-roller residents of Las Vegas hote