Add new comment Your name Subject Comment About text formats Restricted HTML Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id> Lines and paragraphs break automatically. Web page addresses and email addresses turn into links automatically. CAPTCHA Math question 3 + 0 = Solve this simple math problem and enter the result. E.g. for 1+3, enter 4. This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Name viaduct Unit 1 Piece 5-01 Collection 1 Photo Credit Robert M. Vogel Photo Date 1961-05-10 Photo_Notes unknown viaduct, slide reads \"Iron Trestle, East of Barnsley, England, Yorkshire\" Photo Site ID Viaduct Structure Viaduct
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