Both networks shared sales executives, off- and on-air staff, and production and studio facilities; it would not be until  that a concerted effort began to distinguish NBC Red and NBC Blue. One 1939 story in Time magazine would describe NBC Blue as "... long considered a weak sister to NBC's Red Network".
Both networks shared sales executives, on- and off-air staff, and production and studio facilities; it would not be until  that a coordinated effort began to differentiate NBC Red from NBC Blue. One 1939 story in Time magazine would describe NBC Blue as "... previously regarded as a weaker counterpart to NBC's Red Network".