I also came across some birthday cards my mother sent to my dad before they were married, here is one of the prettier ones which I like, they are married almost 40 years now.
I also discovered this really old card which my great grandmother gave to my grandmother for her birthday. After a chat with my dad, he informed me that my great grandmother passed away in 1969 which means that this card has to be over 40 years old, it is so pretty with the blue ribbon on the side.
I'm really glad I rooted through all my old cards this evening, I came across alot of them which brought back many happy memories. I love receiving greeting cards :)