Hoosier Cabinet

I have purchased replacement cards for a hoosier cabinet - where and how are they mounted?
There are three cards that were original to the cabinet. They have meal planning / cooking information, etc. Were they tacked or glued inside each of the three upper doors?
I don't know your answer for sure but maybe this company can help you.
http://www.kennedyhardware.com/door-charts/
Happy New Year!