Gordon Rankin of Wavelength Audio scores a "best of show" in coverage
by The Audio Beat ezine. 

http://www.theaudiobeat.com/rmaf2013/rmaf2013_wavelength_vaughn.htm

1960 Freed Transformer catalog

http://tinyurl.com/ncyquw8

or
http://ebookbrowsee.net/freed-transformer-company-1960-rem-24-pdf-d438795004