Chemical Laboratory, <a href="https://en.wikipedia.org/wiki/Lehigh_University" class="extiw" title="en:Lehigh University">Lehigh University</a>, South Bethlehem, Pa
uploaded by <a href="//commons.wikimedia.org/wiki/User:Parkerdr" title="User:Parkerdr">user:parkerdr</a>
Scanned postcard, with (c) date 1905