U.S. Post Office, Wilmington, Ohio (Date Unknown) by Admin | Posted on January 15, 2018September 12, 2021 Vintage linen postcard depicting the U.S. Post Office in Wilmington, Ohio. The description on the front of the card:U.S. Post Office, Wilmington, Ohio Estimated Date: 1930-1940s Era: Linen EraCondition: Unused Back of the postcard with the MWM logo. Publisher: MWM. MWM Color-Litho “Bursheen” finished. Made only by MWM, Aurora, Mo. Rights Info: Public Domain