Larry Jones' Physiology Notebook with Cover Drawing and Diagrams interactive I am not sure about

I am not sure about the age on this piece

for filling with rocks or shells

as most I have in this style contain an interior compartment--usually concealed by a sliding top--for stashing snuff (ground tobacco

Each frame measures 6" tall x 7 1/2" wide x 1 1/2" deep

My guess is that it is Japanese

Larry Jones' Physiology Notebook with Cover Drawing and Diagrams interactive I am not sure aboutI think Larry Jones must have been an exceptional student if this old Physiology notebook, I'd assume from high school, is any indication; it's quite a thing! Hard to beat his original hand drawn (in colored pencil) cover, with Physiology spelled out in bones, surrounding by illustrations of heart, skull, muscles, etc., plusher is teacher Miss Mayo's name at the top! Inside, he's hand colored and vigorously labeled printed diagrams of the body's