Maid-en Anachronism: Viking Underdress. From my view point, this pattern can save on fabric, but I would juxtapose the front and back side pieces if one side os cut on the bias to add fullness. This way you won't have and stretch to your seams. May have to try this one for fit, esp through the torso. Not sure what era this is from. But definately, rectangle construction method.
Blog article about viking underdress - she has some great incites and ideas about different patterns and styles. This is a closeup of the Eura dress she made. Site is in Polish so use google translate - Trollkona (awesome blog!)
Flemish Gown wardrobe plans of Genoveva von Lubeck. "If I make three complete reversible gowns and a few accessories, all in carefully chosen colors, I can actually get like 30 outfits out of it … maybe more, I didn’t keep going with all the permutations. Here’s what I have in mind right now — the color square next to each gown under the Basic Wardrobe is the reverse side of the overdress, and the accessories include two sets of tie-on sleeves, two partlets, and one apron."
More Thoughts on the Flemish Gown: Colors and Variations