I watched this movie from the OMNIMAX theater in Pittsburgh, then borrowed it from the Carnegie library of Pittsburgh to watch it a second time.I plan on obtaining more copies so that my 3 children and 7 grandchildren can watch it. This movie is long overdue in describing in an amazing way the history of Old Allegheny and Pittsburgh. Two separate and then one amazing area of our country that has never been given proper credit for what it did for our country. This area helped to build this country and helped us win two world wars. Carnegie,Frick,Thaw,Langely,Schwab,Brashear,Mellon, Heinz and Westinghouse. Pittsburgh leaders not only in industry but in the study of the heaven and planets and stars.Leaders in air flight and astrophysics. The Observatory in Riverview park is not just a place to walk your dogs around .It was and still is a vital part of the history of science in the country . Thank you Dan Handley for an excellent presentation of an amazing story.