The U.S. Postal Service revealed two new designs for Presorted Standard stamps in San Diego Friday, illustrating America’s iconic natural landscapes.

The four new Presorted First-Class Mail stamps feature photographs of bridges that range from modern to historic, pedestrian to car-carrying and are landmarks of their communities.

The Postal Service issued the nondenominated (25-cent value) American Eagle presorted first-class mail stamps in a pressure-sensitive adhesive coil of 10,000 on June 26, 2003, in Santa Clara, ...