The tape can be found inside Vault 51, in the theater, behind the curtain of the stage, to the left on top of a metal box. This holotape requires overseer rank 3. Before Patch 13, the requirement was rank 6.
Harold Clark: I'm leaving this audio log for my incompetent brothers and the esteemed members of the board at Clark, Clark, Clark & Associates. This is Harold K. Clark, Jr. and I am currently locked in Vault-Tec's Vault 51 in the Appalachia region of West Virginia.
Since no one else had the balls, I took it upon myself and came to this Vault, but I've been locked in. In here I'm known as "Clayton Ward," since someone was too stupid to show up - thanks for the free rent, moron! I'm not sure what the situation is out there, but everything seemed fine before I got here... I don't know if anything could bomb as bad as our profits last year!
Nuclear war might actually help you fools - great job running my father's company into the ground, by the way! I've taken a good look at this place, and, honestly? Not impressed. Sure, it's big, but that's what you get when you're working on Uncle Sam's dime, robbing the American people blind. The Clarks built ourselves up from nothing and represent the actual American -- hard-working and not willing to quit!
Listen, if you eggheads could do your jobs... It's incredible. Amazing, even! Get this: there's this giant computer here and it's running this whole show by itself! Nobody pulling the strings, does it all on it's own! Amazing! Gonna learn more and report back whenever possible. Howard...