I recently ran into a realization while researching the making historical US flags. My conclusion: There are very few stringent guidelines in the 1800's. So, people were pretty much free to make the star field pretty much the size they wanted? A lot of the pictures I have viewed of historical flags (Thanks Cnanava!) show a fairly consistent "ratio" for the blue field. It is rarely square. Does anyone have an insight as to whether a ratio existed back then or was it mainly an aesthetic proportion? I do have the option of looking at manufacturer's modern reproductions of the flags of the 1800's and late 1700's but I am concerned that they may be made to the modern guidelines to reduce costly design work. Any thoughts?