How To Show More Nodes in Administering Content Page

To increase the number of nodes displayed per page edit modules/node/node.module and change the number on the following lines

BEFORE:
$form['pager'] = array('#value' => theme('pager', NULL, 50, 0));
AFTER:
$form['pager'] = array('#value' => theme('pager', NULL, 200, 0));

BEFORE:
$result = pager_query('SELECT n.*, u.name, u.uid FROM {node} n '. $filter['join'] .' INNER JOIN {users} u ON n.uid = u.uid '. $filter['where'] .' ORDER BY n.changed DESC', 50, 0, NULL, $filter['args']);
AFTER:
$result = pager_query('SELECT n.*, u.name, u.uid FROM {node} n '. $filter['join'] .' INNER JOIN {users} u ON n.uid = u.uid '. $filter['where'] .' ORDER BY n.changed DESC', 200, 0, NULL, $filter['args']);