From a vacation I took in 1993. Using the order of the negatives this house was between the "Parque de Bombas" and "Escuela de Bellas Artes de Ponce". With Google Maps and some perseverance I located it on Calle Castillo. As best I can figure it's #28. I've seen other images of it on Pinterest indicating Ponce as the origin but can find no other information about it.