When was the victor poem written by cw longenecker?

I don't think there is a C.W. Longnecker or ever was. I first heard the poem at a Dale Carnegie Seminar over 40 years ago. The trainer said it was a collaboration between Dale Carnegie and Percy Whitting and rather than credit themselves or make it anonymous, they "invented" Longnecker. I can't vouch by the explanation. I can just say that I conducted a comprehensive search of databases here and all other English -speaking countries and could find no entry, going back to 1940.