[William Edward] Boeing Corporation (1916-Present) http://www.boeing.com
In December 1996, Boeing purchased McDonnell Douglas (1967-1996) for $13 billion. Thus, the two companies have merged; continuing the decrease of U.S. aerospace companies since the end of the Cold War.
On April 28, 1967, Donald Wills Douglas merged his company, Douglas Aircraft Company (1921-1967) with the McDonnell Aircraft Company (1939-1967).
By the mid-1960s, [James Smith] McDonnell Aircraft Corp. (1939-1967) was the largest employer in Missouri, and in 1967, it expanded its operation by merging with the largest employer in California, the Douglas Aircraft Co. (1921-1967)
North American Aviation's (1934-1996) space systems, aircraft division, Rocketdyne, Autonetics, missile systems, aircraft modification and other units joined The Boeing Company in 1996.
In late 1997 the former Rockwell aerospace units joined Boeing.
[Allan Haines Loughead] Lockheed Missles and Space Corporation
In 1996, Lockheed Aircraft Company and [Glenn L.] Martin Marietta merged to form Lockheed Martin.
[Glenn Luther] Martin
Northrop-Grumman Corporation http://www.northgrum.com
[John Knudsen "Jack"] Northrop
[Leroy Randle] Grumman
In 1994-1996, [Leroy "Red Mike"] Grumman Aerospace and [John K. "Jack"] Northrop Corporation merged to form Northrop Grumman.
The businesses of the former Litton Industries (including Litton Data Systems) are now integrated into Northrop Grumman.
[Howard Robard] Hughes