In November of 1939, The Green Hornet went from Mutual to NBC Blue in an effort to gain more coverage. George W. Trendle, and his legal advisor, Raymond Meurer, felt there was more to gain with NBC Blue picking up the series. Trendle had a number of stipulations which NBC had to abide by, and this ultimately prevented the network from selling sponsorship. Parents were concerned about the program, having gotten the impression that the program was not suitable for a young juvenile audience. Enclosed are scans of various carbons of letters at the NBC Archive related to The Green Hornet and Mr. District Attorney, which you will no doubt find amusing... if not fascinating. Enjoy!