Other research documents were Dagskrá Ríkisútvarpsins 1930-1940 (Program of INBS 1930-1940), Útvarpsárbók (Yearbook of the Radio) and Útvarpstíðindi (The Radio listeners’ Magazine), as well as comments from listeners which appeared in newspapers.
Önnur rann-sóknargögn voru Dagskrá Ríkisútvarpsins 1930-1940, Útvarpsárbók Félags víðvarpsnotenda, Útvarpstíðindi auk ummæla um dagskrána í dagblöðum.