I've organized cards by category. Around 350 card s total. The Lot contains approximately:

120 birthday cards

40+ get well cards

~40 thinking of you / friendship/ just a note cards

~30 thank you cards

20+ sympathy cards

50+ holiday cards, about half are Christmas cards

20 fathers day, mothers day, anniversary cards

30+ misc/ blank cards

There's a variety of brands, some have organizations on the back (i.e. American cancer society, Green peace, Sierra club). I threw out ones with writing but I saw a few slipped through after I took pictures. There a handful of handmade cards. Most have matching envelopes they're paired with. I've included a handful of miscellaneous additional envelopes for the ones that don't have envelopes. I've organized the cards in Ziploc bags by the above categories.