1995 Remembering IBM OS/390 Mainframe Computer Operating System: Original Pre-release Announcement
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Editorial review · 85% confidenceComputer History Archives Project ("CHAP") is already on Lumen; this upload was never considered before. Channel treated as academic (strict check, default pass); title passed a strict per-title check and a final strict pass; oEmbed verified.
A 14-minute video from Computer History Archives Project ("CHAP"): “1995 Remembering IBM OS/390 Mainframe Computer Operating System: Original Pre-release Announcement”.
Video by Computer History Archives Project ("CHAP"), played through YouTube's embedded player.