Yes he did! I am willing to bet that JFK was not the only person that LBJ rubbed out.
I am from Texas. There was famous case were a well known Lawyer prooved a man committed suicide, with 6 SHOTS in him, getting his client off in the process.(I think the attoney was Racehorse Haynes, but I could be wrong, it was a long time ago).
The dead man was a Houston Chronicle reporter that found out that dead people were voting in one of his Senate Elections, before he was Veep and POTUS.
There is no evidence whatsoever that anyone other than Oswald, acting alone, killed JFK.