The original German entitling of the album is "Elektrischer Landadel". This is a humorous tribute to Jimi's "Electric Landlady". You can take it as a kind of self-mockery about producing a "double album-masterwork" just after two gigs. Landadel is also the name of an exceptional stallion (1982-96) who's blood can have an significant influence on insemination prices nowadays. Therefore "Landadel" ("Gentry") is a household name in horse breeding. As an effect Google will show you more horses than squires if you search for pictures attributed to "Landadel". So that's where all the horses on the cover come from which along with a minimoog-switchboard were merged to some kind of cyborg-icons.