These special photos have likely been in existence in books and online for a while, but they have recently made the rounds on Tumblr, and they're just too good not to pass on. The pics offer a peek behind the scenes of Sesame Street in the 1970s, when Jim Henson didn't take great care of his Muppets, and they're rather enchanting. They offer glimpses at Snuffleupagus storage, Slimey's 4th Of July apparel, and how two puppeteers work together to make Ernie look like a fully functioning entity.