Holotape (Allen Marks) (referred to as Holotape in-game) is a holotape in Fallout: New Vegas that can be found during the quest A Valuable Lesson.
Location[]
It can be found lying next to Allen Marks in the prize room of the Sunset Sarsaparilla headquarters. This holotape tells the Courier how he died.
Transcript[]
I guess this is it. Not much air left now. Minutes, maybe. And this is what I have to show for it. I guess the joke's <gasps air>on me. Prolly shouldn't <gasp for air> have killed... all those people, Prolly shoulda stayed at home... <gasp for air> and taken care of my ma. She... always used to say people who... murder and steal... die bad in the end. Said they... <gasp for air>