Here is a look at the history of the Sony Walkman, a device created in 1979 by Masaru Ibuka and Akio Morita that ushered in the era of portable music.
Sony Group Portal - Product & Technology Milestones−Personal Audio
Sony Group Portal - Product & Technology Milestones−Personal Audio
A Brief History of the Walkman – Outdoor Speakers UK
The Evolution of the Sony Walkman - Moon Audio
SONY Walkman evolution 1979-2019
Chart: The History of Portable Music
Walkman Story: The Early Years of the Iconic Personal Cassette
A Brief History of the Walkman – Outdoor Speakers UK
Today in Music History: Sony introduced the Walkman
The Evolution of the Sony Walkman - Moon Audio
Walkman Story: The Early Years of the Iconic Personal Cassette
Original Sony Walkman (TPS-L2): A Brief History
HISTORY - On #ThisDayinHistory 1979, the first Sony Walkman goes
In Remembrance Of: A History of the Walkman
Sony Introduces The Walkman - July 1, 1979