Also, any idea what would get tossed by the guards who screen his mail if I send him pictures or letters? I want to make sure he has to see what I'm sending.
I don't live in the US; have you looked up antifascist tips on sending mails to incarcerated people? They often contain simple things like
- numbering each thing you are sending so the person knows if something is missing
- standard legal clauses
- safety precautions
- ...