|I'm not sure why all these pictures are such bad quality...|
And because I'm me, I never gave up on Googling those things -- for years now I've been trying to find them, and the internet is filled with deadends. A lot of people who, like the Victorian House from Sabrina, are trying to answer you without really understanding the question.
Without further ado, our website of the day is Candlesbook.com -- the website where you can buy the canvas posters! There are actually a bunch more options than just what Barnes and Noble have purchased, too. Only downside is the canvases of the size at B&N are over $100, and my poor budget can't afford that.