Matt Alt writes about the history of the Walkman, the portable cassette player invented in 1979.
Sony celebrates 40 years of Walkman in Tokyo
40 Years Ago, Sony's Walkman Changed Music Listening
Happy 40th to the Sony Walkman - Hi-Fi Corner - Naim Audio - Community
The Walkman is turning 40 this year - here's how listening to music has changed over the years
The Walkman Turns 40: See Every Generation of Sony's Iconic Personal Stereo in One Minute
Sony launches a new WALKMAN more than 40 years after the original
The Sony Walkman turns 40 years old today – New York Daily News
The Walkman is turning 40 this year - here's how listening to music has changed over the years
The First Sony Walkman Was Released 40 Years Ago Today, 51% OFF
Happy Birthday, Sony Walkman, July 1, 1979–October 25, 2010. Forty-one years ago today music consumers acquired the ability to create their own private portable playlists. Cornell Library Rare and Manuscript Division. Archives
Sony celebrates 40 years of Walkman in Tokyo - The Verge
How the Sony Walkman Became an Icon That Lives On 40 Years Later