Introduction to "The Woodward-Hoffmann Rules. From May 5, 1964, to November 30, 1964".

An introduction is provided to Publication 11 in the series of articles by the author on the history of the Woodward-Hoffmann (W-H) rules. Now permanently open access (CC-BY) at http://pubs.acs.org/doi/abs/10.1021/acs.joc.5b01792, Paper 11 was published in 2015 in The Journal of Organic Chemistry to celebrate the 50th anniversary of the W-H rules. This paper summarizes the content of Publications 1-10 in the series and provides an idea of the major components of Publication 11.