Semon, Craig S. (December 31, 2012). "Lois Lane takes the spotlight". Telegram & Gazette. Worcester, Massachusetts. Archived from the original on April 2, 2015. Retrieved January 1, 2013.
This ad appeared in The Plain Dealer on 13 January 1935, according to this Twitter post by Brad Ricca. Brad Ricca is a historian who wrote a biography of Siegel and Shuster (Super Boys).
Semon, Craig S. (December 31, 2012). "Lois Lane takes the spotlight". Telegram & Gazette. Worcester, Massachusetts. Archived from the original on April 2, 2015. Retrieved January 1, 2013.