{"product_id":"a-guide-to-patapsco-valley-mill-sites-our-valleys-contribution-to-marylands-industrial-revolution-9781418452971","title":"A Guide to Patapsco Valley Mill Sites: Our Valley's Contribution to Maryland's Industrial Revolution","description":"This study is part of a project for Patapsco Valley State Park. Is it a complete comprehensive study? Not by a long shot. It is the best collection of this type of information available at this time. It is a study built upon information based in it's bibliography. There is still much to do. When asked how much time it took? I say forever  It never ends  As soon as I finish a section new material seems to surface. I regularly get telephone calls asking, adding or correcting materials. If pursued I would say about eight hours of research per mile to cover both our 1993 and 2003 studies.\u003cbr\u003e","brand":"Authorhouse","offers":[{"title":"Default Title","offer_id":50465299562770,"sku":"9781418452971","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_32e4a302-0a16-479a-aa04-47e2f03dc5ab.jpg?v=1730111109","url":"https:\/\/surprise-castle.myshopify.com\/products\/a-guide-to-patapsco-valley-mill-sites-our-valleys-contribution-to-marylands-industrial-revolution-9781418452971","provider":"Surprise Castle","version":"1.0","type":"link"}