Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Three Well-Dressed Gentlemen, Probably Executives, Evaluating an Unknown Work Site.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.

Caption Missing. Click to us identify this photograph.