"We Deliver" Mail Truck Postcard—Pack of 70

"Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds."
Maybe not the official postal code, but here's a carrier that at least isn't deterred by the snow.
Each pack has 70 postcards.
Postcards are 4 inches by 6 inches.

Back of postcard reads:
Sincere thanks and appreciation for your kindness. Best wishes for a joyful holiday season and a happy new year.