When I was at LSU in the 1960's, I remember reading a book in the library titled "Politics, Parties, and Pressure Groups" by V.O. Key, fourth edition, 1964. Much to my amazement, the NRA was nowhere to be mentioned.

This was before the NRA had to deal with 1968 Victim Disarmament Act and the plethora of such illegal acts and edicts to follow.