Mangum's work is often made from recycled materials: scrap lumber, old cloth, discarded tin, and other found objects. His hand-carved saints (bultos) are sometimes clothed in fabric-mache and then adorned with tin halos, crowns, auras and found object accessories. His nativities and Noah's Arks are uniquely designed with handcarved figures. Mangum also paints pictures on old tin and wood (retablos). His work has been featured in Galeria Ortiz, located in Market Square and the Ursuline Gallery at the Southwest School of Arts and Crafts in San Antonio, along with galleries in Fredericksburg and Round Top.  In August 2007, Mangum was artist-in-residence in Butte, Montana (Butte-Silver Bow Arts Foundation).

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Saint Michael

Nuestra Senora con El Nino