Von: Randal Baier <[log in to unmask]>

> 45 RPM: A Visual History of the Seven-inch Record 
> edited by Spencer Drate (ppg.8-10) 
> [in Google Books] 
> 
> RCA Victor's 1949 Preview of the World's First 45 rpm Records!‬ 
> https://www.youtube.com/watch?v=ebRx7FN6vlc 

I usually end up posting this in some forum or other every year,
typically in response to the "78-33=45!!!!" nonsense.  RCA's
white paper describing the 45:

http://tildebang.com/jukebox/rec_and_changer_comp_design_45.pdf


----------------------------------------------------------------
Mit einer kostenlosen E-Mail-Adresse @t-online.de werden Ihre Daten verschlüsselt übertragen und in Deutschland gespeichert.
www.t-online.de/email-kostenlos