www.locutor.info/MuseudoRadio.htm
radios.barukar.com.br/links_radios.html
www.portalsaofrancisco.com.br/alfa/historia-do-radio/historia-do-radio.php
www.murphy-radio.co.uk/dungeon/Dungeon1.html
www.vintageradio.com/index.php?a=28&b=153
www.introni.it/riviste_radio_diagrams.html
www.radio-workshop.co.uk/manuals.shtml
www.blogdopicco.blogspot.com.br/
www.antiqueradiomuseum.org/plasticradios.htm
sites.google.com/site/collezionediradio/home
www.jitterbuzz.com/indrad.html#belmo
www.radioantique.com.br/nacionais.htm