And now a page from our "Sunday Morning" Almanac: January 10th, 1949, 67 years ago today ... the day RCA Victor unveiled a new breed of phonograph record -- the 45. Just seven inches across, with a ...

Records and machines to play them on have been around for over 100 years. Mass-produced recorded music for the home began in the early 1900s with Thomas Edison's cylinder players. After a few short ...