One stamp depicts Boston’s Old North Church as it appeared back in the 1770s, while the other depicts a “‘midnight rider’ on horseback in Colonial garb holding a lantern to light his way,” the postal service said.

The USPS has also released a commemorative sheet of 20 interconnected stamps, dubbed “250 Years of Delivering,” that portray a mail carrier making her rounds throughout a year. The stamps were illustrated by renowned cartoonist Chris Ware.