Antonio Alcalá, an art director for USPS, designed the stamps using existing photographs. "I am enchanted by the colors one finds in leaves, especially during the autumn season," Alcala said.

Designed by USPS art ... stamps utilize existing photographs to highlight the diversity of leaf shapes and colors. “I am enchanted by the colors one finds in leaves, especially during the autumn ...

The USPS often releases new designs for stamps, such as the fishing-themed images on last week's new set of Forever Stamps, or stamps that commemorate public holidays, or the advent of a new year.