Yes, both were great bands.
The other version of ELP you're thinking about was Emerson, Lake, and Powell.
Powell was a guy named Cozy Powell. He replaced the original ELP drummer, Carl Palmer. The lineup with Powell only recorded one album.
BTW...LeslieWest, do you know if Steppenwolf is in the R&R HoF or not? If not, they should at least be considered.