Proposed plan for building a bridge across the East River at Blackwell's Island This book, "Proposed plan for building a bridge across the East River at Blackwell's Island", by William Petit Trowbridge, is a replication of a book originally published before 1868. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.