December, 1917 A. Nothing new is contained in this LEARN TELEGRAPHY «wis: =< idea, schemes of this nature having been in use by the Allies as well as by the Central Powers, and sometimes quite good pictures have been obtained. More times, however,. the balloons with the camera have been shot down…
Radio · Periodicals · Electrical Experimenter
Internet Archive · Curtis Philips · Public Domain Mark 1.0. Free to use for anything.
