history of cards inserts and evolution thread discussion

[Poorboy]

wondered if you folks would want to discuss the development of sports card inserts.
from day one they were insert /advertising premiums.
when cards were more established the floodgates opened.
various coins,game oriented playing style cards,posters ect ect were issued bytopps ect.
which continues to this day.
placed in vintage because the initial history starts here.
if anyone wants to discuss or share pics?
blowout style........
might be a fun thread?