The Texas International Pop Festival
Interesting. I take it you went to that one? I went to the New Orleans Pop Festival at a racetrack near Gonzales, Louisiana that same weekend (Labor Day) in 1969. I see that some bands played all three festivals and in some cases bands that played the TIPF did not play LPF and vice-versa. I am envious that you got to see Led Zepellin in 1969. Pretty dog-done cool.