Edward, There is a set 3 printed books by XYQUEST: 1) Signature. Programming Language User’s Guide. 1992. ISBN 0-927923-24-6 2) Signature. Technical Reference Guide. 1992. ISBN 0-927923-27-0 3) Signature. Command Reference Guide. 1991. ISBN 0-927923-26-2As far as I know there are no scanned versions. These books were published after IBM had renounced their plans to distribute Signature and XyQuest tried to sell Signature on its own.
Best regards, Kari Eveli LEXITEC Book Publishing (Finland) lexitec@xxxxxxxxxx *** Lexitec Online *** Lexitec in English: https://www.lexitec.fi/english.html Lexitec English and Finnish dictionaries: https://sk.lexitec.fi/en/ Home page in Finnish: https://www.lexitec.fi/