Picture of the Babcock and Wilcox (B&W) Company steel plant. B&W was the second largest contractor for the Hoover Dam project and built many of the houses that are still in Boulder City for their employees.
Hoover Dam construction by Bureau of Reclamation, Boulder City, Nevada on postcard. Inscription on back: 'In Flight With United Air Lines. Mighty Boulder Dam and its vast lake are impressive sights for air travelers flying from New York, Chicago, and other cities to Los Angeles via United Air Lines."" (no handwriting or address on post card).