OSSmile 
🔧 Useful — Something to read to get better at something.
The Special Aviation Issue for March 1929: planes for private flying, the builders of the aviation industry, and — thirty-five cents, no other qualification required — how to build a glider.
⬇ FREE PDF · 41.7 MB — at archive.org ↗📭 Nothing off this shelf yet — Scientific American is still in the crate. Come back in a day or two, or have a look at the rest of the rack. ☕
reading on OSSmile · scan courtesy of the Internet Archive
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