Vintage photos of Zihuatanejo postcards.

Greetings, so a number of years ago, I was strolling about downtown Zihua and was approached by a gentleman selling postcards of vintage photos of the Zihua area. I declined the offer, and have regretted it ever since. Earlier this year, we were down there for an extended time, and I acquired one of them from a local friend we made there.He was unaware where to find more.....So that leads me to the question to you all....where can I find more? I think the company's name is Tarjeta Antigua, which is from the back of the card.
Anyway, I appreciate any help,anyone could provide.....they are wonderful vintage photo's.
Can't wait to hopefully return next February. Peace to all!