Steel-string acoustic guitar - Wikipedia
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History Of Hawaiian Steel Guitar (1999, CD) - Discogs
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Steel guitar - Wikipedia
Martin Guitars: A History, Volume One | Martin Guitar
The history of Martin's earliest acoustic guitar designs, from the 1800s to the early 1900s | Guitar World
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Martin Steel String Backpacker Acoustic Guitar | Martin Guitar
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File:Machine-heads-steel-string-guitar.JPG - Wikimedia Commons
A Brief History of the Guitar
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Music History: Where the Guitar Came From - Learn To Play Music Blog
History Of The Acoustic Guitar
Fretwork: A Look at Vintage Japanese Classical Guitars | Classical Guitar
1949 D'Angelico Excel + 1960 Cort SFX 6-string guitar history article print | eBay
THE HISTORY OF THE CLASSICAL GUITAR – Guitar From Spain
