Stonewall Penitentiary Demo

I'm playing this great demo of the game, and I'm stuck at the "locker combination" puzzle. I've been looking and reading everything, but I can't find a clue to this 3 digit combination. I'm assuming that the missing "clothes" are in this locker. If any of our Boomers has gotten past this part of the game, I would appreciate a HINT in the right direction towards solving this puzzle.
Sandy

P.S. Looking forward to the release of the full version.

Sandy, look at the book on the table where the lockers are.

Beside the names, you have numbers with 3 digits.

Try them all.

Chief

There's an initial on the locker that will narrow down the choices.

Thanks, Uncle Reg. You beat me to it!

Thanks so much, Chief and Uncle Reg. I followed your hints, solved the puzzle, and finished the demo.
Sandy