old school rap/hip-hop refrences

[renovicini]

i am looking at expanding my music library to add old school rap/hip-hop music from the 80's and early 90's. I figured since most users here are DJ's, this would be the place to ask.
i am looking for charts of this genre. Website's? anything to refrence to this would be great.
Thanks in advance

[evilstepdad]

This might be a start for ya good luck with the list.

http://rateyourmusic.com/list/diction/80s_hip_hop__top_100