Not really, at least in one sense. The elements are all pretty simple. The most complex things are the more trippier photos, most of which, iirc, are ones that he himself took.
What is amazing, imo, is the clarity of vision behind those things. He had 2 or 3 basic "styles" of design on those covers, and he worked seemingly infinite variations on them. Guess it shows that if you have the vision fully-formed, getting it out ain't no biggie, especially when it involves working w/a minimum of materials.
What I'm still wondering is how the hell he got from the minimalism of the BN covers to the hyperactivism of his later commercial work. The cover to The Basement Tapes is a prime example. It's like doing 0-60 in -10 seconds.