I wouldn’t even bother having it checked, you can pretty much bank on there being lead in it.
Though one thing you may want to keep in mind is that it was probably repainted long after the original construction (meaning it may have been repainted without lead paint at a later date). In fact being 80 years later, it wouldn’t surprise me at all.
As far as lead paint though, for YOUR health, you’re mostly in the clear. I mean you don’t really want lead paint, but the majority of the damage would come from ingesting it or something like that. Since you’re not licking the walls you’d be ok. But it is the type of thing you’d want to get taken care of sooner rather than later.