[1] Rieker became a sculptor in New Orleans, Louisiana, where his designs are found in the City Hall and the First Baptist Church.
[1] His 1940 bust of Governor Huey P. Long can be seen at the Ogden Museum of Southern Art in New Orleans.
[2] Rieker also designed the statue of Jean-Baptiste Le Moyne, Sieur de Bienville inside the Louisiana State Capitol in Baton Rouge, Louisiana.
[1] Rieker designed "two friezes" on the War Memorial Building in Jackson, Mississippi,[2] which is listed as a contributing property to the Old Capitol on the National Register of Historic Places.
Rieker resided in and summered in Clermont Harbor, Mississippi.