Vacationer stumbles across the work of an unknown master photographer at a Barcelona flea market

Vacationing American Tom Sponheim found some photo negatives at a flea market in Barcelona and paid the vendor $3.50 although she was only asking $2.50.
Upon returning home, Sponheim scanned the negatives and discovered that he had stumbled upon the work of an unknown but immensely talented photographer. Read the story of how the photographer's identity was finally revealed.