The first thing that comes into my head when the term is mentioned is the song Blowin' in the Wind. This is closely followed by Puff the Magic Dragon, Home on the Range and Streets of London.
I'm not sure if this is very complimentary to folk guitar music in general, but I guess things have changed a lot over the past 50 years, especially now that music styles overlap into folk-rock, country-folk and others.
Perhaps the one thing that is most synonymous with folk guitar music is the flat-top acoustic guitar. This can come in Jumbo, Dreadnought and small body sizes to name just three and is usually played fingerstyle.You can pay thousands for a top quality folk guitar, but thankfully there are plenty of low cost model available for the beginner to choose from which continues to maintain the popularity of learning to play the instrument.
