EDINBURG — The community-built altar exhibit at the Museum of South Texas History will be featured during “Día de los Muertos: Altar Exhibit Reception,” a Sunday Speaker Series presentation, Nov. 10 at 2 p.m. Families and organizations constructed altars to honor and celebrate the deceased with ofrendas, photographs and memories. The centerpiece of the gallery is the Mystery Altar, which features vintage photographs of unidentified people from the Margaret H. McAllen Memorial Archives photograph collection. The altar honors the nameless and carries with it a preservation message about the importance of documenting family photographs. An additional centerpiece altar is located in the ...