The following article has a fascinating presentation of marketing for audio products in the USA during the 20th century. http://thephoenix.com/Boston/music/129722-rise-and-fall-of-the-columbia-house-record-clu/
The following article has a fascinating presentation of marketing for audio products in the USA during the 20th century. http://thephoenix.com/Boston/music/129722-rise-and-fall-of-the-columbia-house-record-clu/