often an artist will put together a poster for a whole tour for social media promotion, and I think we should have a way to show these

an alternate solution is to add these posters to all the events that are part of the series, but that would involve a bunch of potential data duplication, and I'd imagine often these events will have their own specific posters too

another thing which might be a part of this is extending an art archive to all series, perhaps for series logos and whatnot, but that could be a seperate ticket. I just don't know how easy or difficult it'd be to only allow art for one type of series