Following the success of the 707, 727, 737, and 747 jetliners, the Boeing company began investigation of a new generation of aircraft, focusing on a single-aisle aircraft, the "757", to follow the 727, and a double-aisle aircraft, the "767", in a size class below the 747. Both the 757 and 767 proved successful, with the 767 leading to the enlarged "777" follow-on, and more indirectly to the advanced-technology "787" jetliner. This document provides a history and description of the 757, 767, 777, and 787 jetliners.