Dan,

Check out my thesis on manufactured and imported building materials in early nineteenth-century Indiana. I include an entire chapter on window glass in which I discuss foreign and domestic sources of flat glass, availability, cost, and other factors. I examined dozens of historic newspaper advertisements for my research (most of which didn't make it into the thesis), including papers in southern Indiana and Cincinnati, Ohio. You might also check out the second chapter, which discusses transportation routes and other matters of historic context. You can find it on academia.edu here:

http://ballstate.academia.edu/ChrisManningPratt/Papers/362449/_Just_Arrived_from_the_East_Manufactured_and_Imported_Building_Materials_in_Early_Nineteenth-Century_Indiana

Chris Manning
Graduate Student
Ball State University