Documentation for Xenix and Unix up to to 3.2.4 was published in three ring binders.
Some versions of 3.2.4 were also published in olive/yellow covered paperback.
Documentation for Openserver 5.0.0 through 5.0.6 is published in white paperback books.
Documentation for Openserver 5.0.7 and 6.0.0 is available at
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