The REA 's for which the Sternberg architectural firm designed headquarters buildings were cooperatives .
The REA 's for which the Sternberg architectural firm designed headquarters buildings took him to Nucla , Delta , Durango , Montrose , and Craig .
The REA 's for which the Sternberg architectural firm designed headquarters buildings were cooperatives and took him to Nucla , Delta , Durango , Montrose , and Craig .