shed.jpg is from David Sawford who's at the University of Cambridge
topshed, deadshed, and oldshed are all from Mike Slocombe
woodshed, rustshed, shedwrec and orngshed are from The Master Jeff Drabble
And there's several here
andy the pugh mentions that images of himself, Gaye, Mike Fleming, Gaz and Mark Neil and glimpses of Gaz's collection of fine welsh sheds may be found here
Ian Roderic Izett has pictures of one of his sheds and its contents on his web page here
Joe Tozer finally and circuitously JPEG'd a fine shed which can now be seen here
David J Roberts sent me these: bodshed, and duckshed