American Writing Paper Co. Mill, Manchester. Not Postmarked American Writing Paper Co., Unionville. Postmarked August 20th 1909 Tags: Connecticut Industry, Postcards Build with us Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Read more articles Previous PostPostcards – Ruin of Adams Mill, Manchester Next PostPostcards – American Brass Mills, Torrington, Waterbury & Ansonia You Might Also Like Matthew Griswold August 14, 2015 Henry Dutton August 1, 2019 Isaac Toucey August 14, 2015