The Detroit Postal Service is honoring 10 men and women who helped enslaved people to freedom through the Underground Railroad. The figures are depicted in sepia-toned portraits in a new collection dubbed “Underground Railroad Forever Stamps.” The project is a partnership with the Detroit Postal Customer Council and The Detroit River Project. “We are honored to partner with The Detroit River Project, a team of historians, educators, and scholars dedicated to sharing the history of the Detroit River region,” District Manager Rick Moreton, USPS Michigan One District, said in a statement.