That's not the exact site I was looking for, but YES, that's the block. At least I have a name now to go on to do more searches.
And, for those same blocks sewed together a different way, Fons and Porter has a kit called Sea Etchings. It has the blocks with a thin color strip in the middle of each block, and sets them to look like vases stacked on one another, which is how I will put mine together.
http://www.shopfonsandporter.com/fullsize/560/17