Mostly some pretty obscure labels. I like the way Counterpart reused the William Steig drawing for two records. I like the way Crown pays homage to Josef Albers Persuasive Percussion records. I love when a label issues two different records with the same artwork in a different color scheme. And even Christian music occasionally had a good cover long ago.
Collecting Record Covers 
Love the Colisseum Prince Igor covers. never saw this edition before.