In 1939, Johnson completed his largest figures, two east Indian-inspired Incas seated on Llamas for the Golden Gate International Exposition on Treasure Island. These two eight-foot-high cast stone figures were displayed around the fountain in San Francisco architect Timothy Pfleuger's Court of the Pacifica.

Postcard, Golden Gate International Exposition, 1939

Court of the Pacifica, 1939

Incan on Llamas, 1939