Scarce Early 20th Century Milton Bradley Parish Number Tablets Set vintage ceramic lamp Louis then the Chicago Cubs

Louis then the Chicago Cubs

9 3/8" t x 7 3/8" w x 1 3/4" d

with wear to the green paint on the interior bottom of the holder

brass and iron/steel

Scarce Early 20th Century Milton Bradley Parish Number Tablets Set vintage ceramic lamp Louis then the Chicago CubsI can find no other set of these out there anywhere, and pretty much no reference for them, except a few mentions of "number tablets" used for reaching simple math, produced on wood and cardboard in the later 19th and early 20th century, which is around when Milton Bradley produced these. Each of the 20 cards here is double sided (my photos show one side then the other of each, in batches.) I honestly do not know how they were used but certainly the