the biggest info dump i've encountered comes from a guy that's been communicating since the mid-80s. still going today. there are hundreds and hundreds, maybe thousands of hours of audio and video, all consistent. the information is unbelievable. sometime within the last decade, he finally released a documentary. it's an excellent introduction. and somebody stuck it up on youtube for free. here ya go: https://m.youtube.com/watch?v=e-CoNQm5hjc