Original World War 2 aircraft control industry trade magazine vintage ad for THE FULTON SYLPHON COMPANY of Knoxville, TN.  Mighty Details Vital to Victory.  Of the many thousand parts that make up an American fighting plane, few are more essential than the Sylphon Controls and Sylphon Bellows Assemblies that give engines new life, and power vital flying instruments and devices.  Old 1943 WW2 era propaganda magazine advertisement.