Guns in homes had always been fairly common and growing up in the 50s and 60s off hand I do not remember hearing of kids using them or being harm by them
My father had a hunting rifle and a shotgun in the household up in the attic when I was growing up and I never dream of going near them for some reason or other as there were nothing stopping me other then the fact I knew if I did so I would be in a world of trouble.
The weapons rarely got used as my father was not into hunting all that must. In fact I remember how he once took me and my mother to a shooting club he had just joined along with a brand new shotgun. He was trying to hit a target with solid rounds from the shotgun and was all over the place. He turned to the gentlemen surrounding us and stated that the sights must be off and he would need to go to the gun smith to have them corrected.
My dear mother ask then to try the weapon and as she did not even know how to hold if that cause a great deal of amusement with the men but nothing compare to the amusement that follow when the first shot that she ever fired with a shotgun was dead center on the target.
Poor Dad got us out of there fast and never did return to that club, however my mother being my mother grab the target and then mounted it for years on a wall in our kitchen.
In any case I was a growth adult long out of my parents home before I purchase a colt 1911A 45 and went shooting for the first time.