Latest 'Mad Men' references Chicago student nurse murders of 1966

<div class="meta "><span class="caption-text ">Chicago Police Superintendent O.W. Wilson holds a photograph of a man he identified as Richard B. Speck, 25, in Chicago, July 16, 1966. Wilson said a warrant had been issued for Speck in connection with the slaying of eight student nurses. Fingerprints found at the scene of the slaying matched Speck&#39;s, Wilson said.  The Speck murders had a jarring effect on characters in the Sunday, April 8, 2012, episode of &#39;&#39;Mad Men.&#39;&#39; &#40;AP Photo&#41; (AP Photo&#47; RS)</span></div>
April 10, 2012 4:58:56 AM PDT