Black and white image of Black Canyon at the site of Hoover Dam construction. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of Hoover Dam's downstream face and intake towers from the lookout point on the Nevada side. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of the downstream side of Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image from the downstream side of Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of the Clark County High School basketball team. Back row (left to right): Leland Ronnow, unidentified, Vernon Delameter. First row (left to right): unidentified, Harry Gentry, unidentified

Black and white image of students, teachers, and the principal of Clark County High School taking a school picture. Back row (left to right): Reynolds Robbins, Harry Gentry, Florence Bishop, Miss Lester (teacher), Wanda Ball, Leon Ronnow, Joe Coughlin, Herbert Squires, Vernon Delameter. Front row (left to right): Leland Ronnow, Clara Kiernan, Martha Kramer, Zatta McDonald, Olive Lake, Helene Reed, Louella Wengert, and Harry Overman (Principal).

Black and white image of students at Clark County High School. Students are acting out the play, "Merchant of Venice," by William Shakespeare. Standing, from left to right: Leon Ronnow, Florence Bishop, Clara Kiernan, Roger (last name unknown), Leland Ronnow, Ed Marshall, Reynolds Robbins, Rose Coughlin, and Martha Kramer. Kneeling, from left to right: Herbert Squires, Gladys Boggs, Harry Gentry, and Olive Lake. Joe Coughlin's back is to the camera.