Both Meddle and Relics were released in 71', Relics being a compilation of tracks from the earlier psych-pop material (Piper at the Gates, Sauces full of Secrets, etc..) and Meddle maintaining some of that psych feel on tracks like San Tropez and Seamus but at the same time blowing minds with the epic prog-rockin jams of Fearless (Serious contender for my favourite Floyd track ever) and the side long masterpiece Echoes. Below are what the albums actually look like.
First lp reissue of Relics
Original sketch by drummer Nick Mason
Relics cd reissue
Speaking of 71'. I didn't even realize how many good albums came out that year until I stumbled upon this: peacedogman's cheap seats guide to 71' Unfortunately Meddle didn't make the cut, but you'll find Can, The Who, Zepplin, Sabbath, The Stones, Funkadelic, David Bowie, Comus, Alice Copper and a bunch more.
You should also check out this Pink Floyd related post from a few months back on the very excellent Expressway to My Skull blog crafted by my buddy Mark whose quaint and insightful posts put to shame most music blogs.