Like Tori said, or here's a screenshot: Edit: it's a different comic, but hopefully still helpful to someone lol
not there but i found it lol for some reason clicking on something else in my journal then re clicking the comics mission made it appear i think mines was bugged because i checked the spot i did find it at. Mines was 252, that rail one is 419 but thanks anyway i found 419 quicker thankz to u lol