She was sponsored by Mrs. Edward H. Campbell , commissioned on 27 October 1936 , with Commander C. D. Swain in command .
Preston was laid down on 27 October 1934 at the Mare Island Navy Yard , Vallejo , California , and launched on 22 April 1936 .
Vallejo was sponsored by Mrs. Edward H. Campbell , commissioned on 27 October 1936 , with Commander C. D. Swain in command .
Preston was laid down on 27 October 1934 at the Mare Island Navy Yard , Vallejo , California , and launched on 22 April 1936 .