View source for Phonograph cylinder

== References ==
* [http://en.wikipedia.org/wiki/Phonograph_cylinder Phonograph cylinder (Wikipedia)]
* [http://cylinders.library.ucsb.edu/ Cylinder Preservation and Digitization Project]
* [https://web.archive.org/web/20130616010251/http://shinelimited.co.nz/work/the-becks-edison-bottle Edison-style cylinder on a beer bottle]
* [http://www.newyorker.com/reporting/2014/05/19/140519fa_fact_wilkinson A Voice from the Past: How a physicist resurrected the earliest recordings]