In 1956 the Burroughs Corp. acquired Electro Data.
(This is why some of the name blocks in the upper right
have the Burroughs Logo, and others have Electrodata.)

In Sept of 1986 Burroughs Corp. merged with Sperry Rand and became Unisys.
In 1991 Unisys donated their Burroughs info to The Charle Babbage
Institute at the University of Minnesota. It can be found at:

"http://www.cbi.umn.edu/burros/burros.htm"