Great stuff, there! Not many people you find are aware of Protector or Massacra, Morbid Angel and VoiVod are also old favorites of mine, Trey Azagthoth has been a major influence on my playing and I liken listening to those old MA albums to religious experiences. I've got to listen to that Death Strike album, I'm a big fan of Speckman's other band, Master but never listened to DS - Paul Masvidal played on the Master album On The Seventh Day...Speckman's comments about that are pretty funny.
http://www.metal-archives.com/Some info about bands i have found there, i don't know if they are largest but i'm very pleased such site exist.
You can find info chronologically and later you can find it on youtube and enjoy in music.