Vintage Leanin Tree Christmas Cards Lot Of 5 Native American 1978 Unused READ

3 of the cards say "1978" and the others do not have a date but we are pretty sure they are vintage as well. Also, the envelopes that are here are not original with the set. They are a different brand. Cards are  unused but a couple show very mild wear from storage. Please see photos for details on condition and measurements.