Amazing report - two things of note:
Firstly, do those images not ring any bells with anyone - they look very much like quite a lot of the eye witness testimonies for the Roswell craft...
for example
here
Remember, Roswell - 1947, Mr Rhodes - 1949. So it may have been either a contemporary US Black Aircraft or the du jour scout craft for our little
green buddies...
Secondly, there might a trail to follow back to the man himself via Amazing Stories - if someone was to enquire into the archives of the magazine
(Paizo Publishing:
homepage), for around late 1947 - early 1948, Mr Rhodes may very well appear (if he was expecting
to hear a response to his question, he must have left a return address!)