Hi!
Robert J Atherly seems to keep following me lol. I came across his employee card with the Panama Canal. I this link takes you directly to the page with his record.

http://archive.org/stream/soundex1920can001

And, I found the complete article in the Panama Canal Review, on this same website (link aforementioned), to the picture of Mr. Atherly as messenger. Let me know if you want that link too.