File:Promotional card from late 1800s of the Engle Clock.jpg

Summary
Engle Monumental Clock-Promotional card from the late 1800s of the Engle Monumental Clock taken from http://electric-clocks.com/Engle/index.htm. Image is from late 1800s and offers distinct historical significance. The advertisement carried no copyright notice and it entered the U.S. public domain instantly upon publication. Image itself no longer falls under copyright protection.