Unique distinction between similar releases: the C1 credit here is for Lake only, while on [r7541861] the song is credited to Emerson/Lake.

Gatefold sleeve
The First Impression of "Karn Evil 9" shows a different stereo mix if compared with [m11997], and it appears without fade-out/fade-in between Parts 1 and 2, probably for the first time ever (no fade-out/fade-in would be rather common on remastered CD releases of [m11997]).