Vintage photos of Zihuatanejo postcards.

Try ARTE MEXICANO NOPAL at 56 Ave 5. They have some on the desk and others in the back. Their other store, La casa de Tierra has some cool things as well but I never noticed any post cards. Good Luck, Hope it is what you are looking for.

We went out looking for the same thing to frame as small art work items. We wanted Black and White photos of the area 50 years ago.