Cray-1 SuperComputer Memory Module Board. Circa 1976. Single sided.Back are ELC

Cray-2 SuperComputer Memory Module Daughter Board. Circa - 1982

Cray-2 SuperComputer Memory Module Daughter Board. Circa - 1985. Smaller IC’s.

Cray-1 SuperComputer Memory Module Daughter Board. Circa - 1976 ( Double Sided )

Cray X-MP Supercomputer Board Memory, No Lucite, Board Only. Circa 1984

Cray-2 SuperComputer E.L.C. Electronic Module Daughter Board. Circa - 1985

Cray X-MP E.L.C. SuperComputer Memory Module. Circa 1984. Double Sided Board.

"LOGO"-Cray-1 SuperComputer Memory Module.Circa 1976. Single sided.Back are ELC