Grundig C 100 and the early history of the Compact Cassette
Cassette tape - Wikipedia
Blank Cassettes: Audio - Philips - No Sort - C - 60 - Netherlands (1966)
Cassette tape - Wikipedia
Sony Group Portal - Sony History Chapter5 Promoting Compact Cassettes Worldwide
Sony Group Portal - Product & Technology Milestones−Digital Camera
Cassette tape - Wikipedia
Inventor of Compact Cassettes, which spawned countless mixtapes, dies at 94 - WTOP News
Lou Ottens, Inventor of the Audio Cassette Tape, Dead at 94
It was a way to share your musical experiences': why cassette tapes flourished, and still endure | Cassette tape | The Guardian
Forgotten audio formats: Digital compact cassette | Ars Technica
Cassette tape - Wikipedia
File:TDK MA-R90 Compact Audio Cassette (overhead view).jpg - Wikipedia
Grundig C 100 and the early history of the Compact Cassette
The History of the Cassette Tape
Cassette tape - Wikipedia
History
Forgotten audio formats: Digital compact cassette | Ars Technica
File:Vergleich Compact Cassette DC-International Kassette (ii).jpg - Wikipedia
A Brief Audio History of The Compact Cassette - YouTube
When Did the CD Replace the Cassette Tape? – Southtree
The Story of Sound part 4: Wire, War-time secrets, and Walkman's | Norfolk Record Office
Early 1980s Sony Audio Cassettes | Tape Tardis
