vacuum tube computer

Hi all, I have recently joined the list, not yet contributed too much, but enjoyed reading quite a bit. My personal preference is older stuff - if it contains integrated circuits, I am not too much interested (with the possible exception of a Cray-1). I did not succeed in finding any serious equipment in vacuum-tube technology. Therefore, I decided to design and build a complete computer with vacuum-tube technology from scratch. A short description of the project is enclosed, for those of you who might be interested. The attachment is best viewed with some straight ASCII editor, like the MS-Editor. Thanks to Hans Franke for a reading of a draft version and constructive comments. BTW, I am located in Munich, Germany. John G. Zabolitzky