This censored envelope carried a letter from Private Willis W. Wagener of the American Expeditionary Forces to his family in Ceres, California, during World War I. The 'A.E.F. Passed as Censored' stamp reflects the U.S. Army's wartime practice of reviewing soldiers' outgoing mail to safeguard operational security, a routine but revealing feature of doughboy correspondence from the WWI front. Project: 218254