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<font size="5" face="Comic Sans MS">"The Aeroplane at War" is an
interesting book from 1914 and freely available at Project
Gutenberg. There are lots of good pictures.<br>
The links will take you to the HTML versions. There are versions
for E-book readers. Epub, Kindle etc..<br>
<br>
<a
href="https://www.gutenberg.org/cache/epub/63597/pg63597-images.html"
class="moz-txt-link-freetext">https://www.gutenberg.org/cache/epub/63597/pg63597-images.html</a><br>
<br>
The part of special interest for radio is the eighth section<br>
<br>
<a
href="https://www.gutenberg.org/cache/epub/63597/pg63597-images.html#eighth-section-wireless-telegraphy-and-photography-as-aids-to-aerial-reconnaissance"
class="moz-txt-link-freetext">https://www.gutenberg.org/cache/epub/63597/pg63597-images.html#eighth-section-wireless-telegraphy-and-photography-as-aids-to-aerial-reconnaissance</a></font><br>
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