Complex sentence: After the Smithsonian acquired the statue, the Institution installed and maintained it first at the National Zoo, then at the Anacostia Neighborhood Museum, and, from the 1970's to 1994, on the National Mall in front of the National Museum of Natural History.
Split into simpler sentences: After the Smithsonian acquired the statue, the Institution installed and maintained it first at the National Zoo. From the 1970's to 1994, the statue was locate at the National Mall in front of the National Museum of Natural History.