Mark Wilson's holotape is a holotape in the Fallout 4 add-on Far Harbor.
Location
The holotape can be found in the upstairs office at Beaver Creek Lanes, it must be ejected from the terminal.
Transcript
Mark: Gotta record this so's I don't forget later. After we closed up for the night, Matt and I split a couple of pitchers while cleaning the pinsetters and we got to talking about Thomas. I just can't believe he's gonna be stuck in a wheelchair for the rest of his life. And now he ain't never gonna have the chance to bowl that perfect game he's been so close ta. So it's like a quarter of three and we're shooting the balls back up the return and checking the motors and all and we get this this really good idea! Thomas's arms still work. So maybe we could use one of them ball returns, but hook it up to a stronger motor and mount it on a board or something. He could launch the balls out of it and down the lane! It'd be like an awesome bowling gun!