first on the back row left is the US Menasha Woodenware radio from 1934;
US Converse produced this radio as part of their "Realy Truly" dollhouse furniture starting in 1931; the radio last radio on this row was made by UK Barton around 1957.
On the front row is a radio made by US Nancy Forbes circa 1940; US Kage made the second radio from 1938 to 1948; the last radio was made by US Strombecker in 1942.
The next two radios are almost duplicates...the dark radio was made by US Ideal and the brown one by Canadian Reliable. The only difference is each radio has their brand name posted on the front above the dial. In Zillner's Furnished Dollhouses 1880-1980 she says that "Reliable was licensed by the Ideal Toy Co. to copy some of Ideal's products." That explains the identical radios. The last radio was made by Jaydon during World War II.