Vintage School Science Project Board Salt Gland Homemade Poster Weird GraphicArt

Description

These are 'as found' with scuffs and marks and so on.
They are someone's homemade science project about the Anatomy of a Salt Gland.
Very weird and wonderful graphic pieces.
Thin board on wood frames.
Please see photos.
Measure 30" x 20" x about 3/4" deep each.