The largest family of airliners in service in the late 1990s were those that seat less than 180 people. The most successful are the Boeing 727 & 737 families. This book contains photographic coverage of these planes. Chapters: Introduction; Boeing 727-100; Boeing 727-200; Boeing 737-100 & -200; Boeing 737-300, -400 & -500; Boeing 737-600, -700, -800 & -900; & Appendices. Over 100 full-color photos.