4x16K Datacraft core memory rack units available (the 5th slot in the rack is for the controller) with Datacraft DC-38 Core and associated power supply, contact me privately if interested. Photos: http://www.vintagecomputer.net/datacraft/ (I believe I have it right that they're 4 x16K cores.) These are general purpose core that can be used in more than just the Burroughs minis they came from. I know for example that a rack like this could be used with an S-100 computer or 8008 system. The photo of the individual core card with the cover removed is an extra, not part of the populated racks. I am located in Landenberg, PA USA roughly between Baltimore and Philadelphia. Bill