Are you interested in Famicom Handbills/Flyers? (I know you said US only, but most of the games got US release as well)

They were given out in Japanese game stores 25+ years ago to promote the sale of said game. They are international paper A4 in size and can range from $8-$300 in cost.

I got a bunch of extras from all different price ranges.

PM me if interested.

Thanks