A U.S. Navy sailor takes a mule ride down a colonnaded street during a liberty call in a Caribbean or Central American port, accompanied by a local attendant on foot. Photographs like this — bluejackets posing on hired mules or donkeys before colonial-era architecture — were a popular souvenir tradition among American sailors visiting ports such as St. Thomas, Panama, and Mexican coastal towns during the late 1890s through 1910s. Project: 218601