Luebbert, William F. and Stoll, Elizabeth L.
Xerox, 'Colossus and the Ultra secret'. Journal and date unknown.
Paper, 22 sh. in envelope.
Provenance: This material was not included in either of the two earlier sections of the catalogue of Turing Papers prepared by the Contemporary Scientific Archives Centre in 1977 and 1985.
No scans available for this item.