viewer-oembed.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>Document Title</title>
</head>
<body>

  <div id="embed-target"></div>

  <script src="https://code.jquery.com/jquery-1.11.3.min.js" type="text/javascript"></script>
  <script type="text/javascript">
    $(document).ready(function(){
      $.getJSON('https://www.documentcloud.org/api/oembed.json?url=https%3A%2F%2Fwww.documentcloud.org%2Fdocuments%2F282753-lefler-thesis.html&responsive=true', function(data){
        if (data.html) {
          $('#embed-target').html(data.html);
        }
      });
    });
  </script>
</body>
</html>