Widener Library
... that the four miles of stacks aisles in Harvard's 3.5-million-volume Widener Library are so labyrinthine that one student felt she ought to carry "a compass, a sandwich, and a whistle" when entering?
... that the four miles of <a class="mw-redirect" href="./Stack_(library_architecture)" id="mwCjw" rel="mw:WikiLink" title="Stack (library architecture)">stacks</a> aisles in <a class="mw-redirect" href="./Harvard" id="mwCj0" rel="mw:WikiLink" title="Harvard">Harvard</a>'s 3.5-million-volume <b id="mwCj4"><a href="./Widener_Library" id="mwCj8" rel="mw:WikiLink" title="Widener Library">Widener Library</a></b> are so <a href="./Labyrinth" id="mwCkA" rel="mw:WikiLink" title="Labyrinth">labyrinthine</a> that one student felt she ought to carry "a compass, a sandwich, and a whistle" when entering?