The wallpaper company Graham & Brown opened in 1946, on the heels of World War II and during a period of paper shortages. Sixty-seven years later, the still-thriving East Coast manufacturer is teaming up with leading designers around the globe. This year, Graham & Brown joined with the British husband-and-wife design team of Wayne and Geraldine Hemingway to create the new Vintage 2 collection. (The Hemingways also worked on the company’s previous Vintage collection in 2011.) The line’s four retro desi…