[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.

 

Jaycor    http://www.jaycor.com

 

Lockheed Martin        http://www.lockheedmartin.com

[Allan Haines Loughead] Lockheed Missles and Space Corporation

In 1996, Lockheed Aircraft Company and [Glenn L.] Martin Marietta merged to form Lockheed Martin.

Martin Marietta

      [Glenn Luther] Martin

      Marietta

 

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.

 

Raytheon      http://www.raytheon.com

       [Howard Robard] Hughes